prosody-modules
4a5837591380
mod_audit/mod_audit.lua

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mod_audit/mod_audit.lua @ 5115:4a5837591380

mod_audit: remove event hook Let's keep it simple for now---also we expose the audit functionality on the moduleapi level anyway.
author Jonas Schäfer <jonas@wielicki.name>
date Thu, 28 Apr 2022 20:22:03 +0200
parent 4934:ae83200fb55f
child 5250:d9577083c5f5
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1 module:set_global();
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2
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3 local audit_log_limit = module:get_option_number("audit_log_limit", 10000);
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4 local cleanup_after = module:get_option_string("audit_log_expires_after", "2w");
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5
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6 local time_now = os.time;
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7 local st = require "util.stanza";
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8 local moduleapi = require "core.moduleapi";
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9
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10 local host_wide_user = "@";
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11
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12 local stores = {};
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13
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14 local function get_store(self, host)
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15 local store = rawget(self, host);
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16 if store then
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17 return store
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18 end
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19 store = module:context(host):open_store("audit", "archive");
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20 rawset(self, host, store);
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21 return store;
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22 end
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23
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24 setmetatable(stores, { __index = get_store });
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25
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26
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27 local function session_extra(session)
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28 local attr = {
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29 xmlns = "xmpp:prosody.im/audit",
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30 };
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31 if session.id then
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32 attr.id = session.id;
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33 end
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34 if session.type then
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35 attr.type = session.type;
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36 end
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37 local stanza = st.stanza("session", attr);
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38 if session.ip then
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39 stanza:text_tag("remote-ip", session.ip);
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40 end
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41 return stanza
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42 end
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43
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44 local function audit(host, user, source, event_type, extra)
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45 if not host or host == "*" then
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46 error("cannot log audit events for global");
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47 end
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48 local user_key = user or host_wide_user;
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49
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50 local attr = {
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51 ["source"] = source,
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52 ["type"] = event_type,
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53 };
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54 if user_key ~= host_wide_user then
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55 attr.user = user_key;
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56 end
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57 local stanza = st.stanza("audit-event", attr);
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58 if extra ~= nil then
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59 if extra.session then
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60 local child = session_extra(extra.session);
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61 if child then
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62 stanza:add_child(child);
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63 end
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64 end
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65 if extra.custom then
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66 for _, child in extra.custom do
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67 if not st.is_stanza(child) then
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68 error("all extra.custom items must be stanzas")
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69 end
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70 stanza:add_child(child);
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71 end
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72 end
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73 end
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74
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75 local id, err = stores[host]:append(nil, nil, stanza, time_now(), user_key);
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76 if err then
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77 module:log("error", "failed to persist audit event: %s", err);
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78 return
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79 else
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80 module:log("debug", "persisted audit event %s as %s", stanza:top_tag(), id);
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81 end
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82 end
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83
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84 function moduleapi.audit(module, user, event_type, extra)
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85 audit(module.host, user, "mod_" .. module:get_name(), event_type, extra);
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86 end