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annotate mod_s2s_log_certs/mod_s2s_log_certs.lua @ 4133:0ba6108afcbf
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author | Matthew Wild <mwild1@gmail.com> |
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date | Tue, 15 Sep 2020 16:16:16 +0100 |
parents | 663e5d923ef0 |
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mod_s2s_log_certs: Log certificate status and fingerprints
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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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9 |
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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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12 |
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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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15 |
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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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19 |
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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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26 |
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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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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 ]] |