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mod_s2s_log_certs/mod_s2s_log_certs.lua @ 1870:6a9f91ad4f95

mod_log_mark/README: Also mention logging
author Kim Alvefur <zash@zash.se>
date Thu, 24 Sep 2015 00:02:15 +0200
parent 1787:663e5d923ef0
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1 module:set_global();
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2
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3 local dm_load = require "util.datamanager".load;
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4 local dm_store = require "util.datamanager".store;
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5 local datetime = require "util.datetime".datetime;
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6
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7 local do_store = module:get_option_boolean(module:get_name().."_persist", false);
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8 local digest_algo = module:get_option_string(module:get_name().."_digest", "sha1");
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10 local function note_cert_digest(event)
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11 local session, remote_host, cert = event.session, event.host, event.cert;
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13 if not (remote_host and cert and cert.digest) then return end;
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14 local digest = cert:digest(digest_algo);
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16 local local_host = session.direction == "outgoing" and session.from_host or session.to_host;
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17 local chain_status = session.cert_chain_status;
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18 local identity_status = session.cert_identity_status;
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20 module:log("info", "%s has a %s %s certificate with %s: %s",
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21 remote_host,
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22 chain_status == "valid" and "trusted" or "untrusted",
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23 identity_status or "invalid",
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24 digest_algo:upper(),
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25 digest:upper():gsub("..",":%0"):sub(2));
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27 if do_store then
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28 local seen_certs = dm_load(remote_host, local_host, "s2s_certs") or {};
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29
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30 digest = digest_algo..":"..digest;
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31 local this_cert = seen_certs[digest] or { first = datetime(); times = 0; }
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32 this_cert.last = datetime();
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33 this_cert.times = this_cert.times + 1;
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34 seen_certs[digest] = this_cert;
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35 chain_status = chain_status;
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36 identity_status = identity_status;
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37 dm_store(remote_host, local_host, "s2s_certs", seen_certs);
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38 end
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39 end
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41 if module.wrap_event then
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42 -- 0.10
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43 module:wrap_event("s2s-check-certificate", function (handlers, event_name, event_data)
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44 local ret = handlers(event_name, event_data);
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45 note_cert_digest(event_data);
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46 return ret;
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47 end);
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48 else
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49 -- 0.9
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50 module:hook("s2s-check-certificate", note_cert_digest, 1000);
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51 end
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52 --[[
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53 function module.add_host(module)
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54 module:hook("s2s-check-certificate", note_cert_digest, 1000);
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55 end
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56 ]]