annotate mod_s2s_log_certs/mod_s2s_log_certs.lua @ 5536:96dec7681af8

mod_firewall: Update user marks to store instantly via map store The original approach was to keep marks in memory only, and persist them at shutdown. That saves I/O, at the cost of potentially losing marks on an unclean shutdown. This change persists marks instantly, which may have some performance overhead but should be more "correct". It also splits the marking/unmarking into an event which may be watched or even fired by other modules.
author Matthew Wild <mwild1@gmail.com>
date Thu, 08 Jun 2023 16:20:42 +0100
parents 663e5d923ef0
children
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1 module:set_global();
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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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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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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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40
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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 ]]