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annotate mod_s2s_log_certs/mod_s2s_log_certs.lua @ 5119:048e339706ba

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mod_rest: Remove manual reference expansion in schema This hack was originally added to reduce the number of definitions of common attributes (type, to, from etc) and payloads (e.g. delay). This predated pointers and references, and until now was needed because parsing picked out the correct stanza kind from the schema, which broke internal references. Removing this hack paves the way for allowing the schema to be configured or customized more easily.
author Kim Alvefur <zash@zash.se>
date Tue, 20 Dec 2022 21:48:28 +0100
parents 663e5d923ef0
children
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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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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 ]]