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annotate plugins/muc/occupant_id.lib.lua @ 14016:1df1782ccdfe

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prosodyctl shell: Improve process exit codes This fixes a bug introduced in 3326c8a29a86 where prosodyctl shell would always exit with non-zero error codes, even on success. Now it will exit with 0 for success, or 1 if any errors were printed. It also updates the other exit codes in the shell command to help distinguish between different error cases. These are based on the sysexits.h codes, although it is not recommended to rely on that interface.
author Matthew Wild <mwild1@gmail.com>
date Fri, 19 Dec 2025 15:32:26 +0000
parents 0e346f4d88ce
children
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a45b209302c1 muc: Update link to XEP-0421 (instead of inbox)
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1 -- Implementation of https://xmpp.org/extensions/xep-0421.html
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2 -- XEP-0421: Anonymous unique occupant identifiers for MUCs
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3
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4 -- (C) 2020 Maxime “pep” Buquet <pep@bouah.net>
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5 -- (C) 2020 Matthew Wild <mwild1@gmail.com>
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6
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7 local uuid = require "prosody.util.uuid";
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8 local hmac_sha256 = require "prosody.util.hashes".hmac_sha256;
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9 local b64encode = require "prosody.util.encodings".base64.encode;
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10
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11 local xmlns_occupant_id = "urn:xmpp:occupant-id:0";
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12
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13 local function get_room_salt(room)
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14 local salt = room._data.occupant_id_salt;
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15 if not salt then
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16 salt = uuid.generate();
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17 room._data.occupant_id_salt = salt;
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18 end
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19 return salt;
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20 end
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21
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22 local function get_occupant_id(room, occupant)
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23 if occupant.stable_id then
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24 return occupant.stable_id;
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25 end
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26
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27 local salt = get_room_salt(room)
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28
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29 occupant.stable_id = b64encode(hmac_sha256(occupant.bare_jid, salt));
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30
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31 return occupant.stable_id;
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32 end
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33
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34 local function get_occupant_id_from_jid(room, real_bare_jid)
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35 local salt = get_room_salt(room)
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36 return b64encode(hmac_sha256(real_bare_jid, salt));
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37 end
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38
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39 local function update_occupant(event)
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40 local stanza, room, occupant, dest_occupant = event.stanza, event.room, event.occupant, event.dest_occupant;
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41
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42 -- "muc-occupant-pre-change" provides "dest_occupant" but not "occupant".
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43 if dest_occupant ~= nil then
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44 occupant = dest_occupant;
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45 end
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46
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47 -- strip any existing <occupant-id/> tags to avoid forgery
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48 stanza:remove_children("occupant-id", xmlns_occupant_id);
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49
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50 local unique_id = get_occupant_id(room, occupant);
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51 stanza:tag("occupant-id", { xmlns = xmlns_occupant_id, id = unique_id }):up();
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52 end
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53
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54 local function muc_private(event)
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55 local stanza, room = event.stanza, event.room;
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56 local occupant = room._occupants[stanza.attr.from];
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57
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58 update_occupant({
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59 stanza = stanza,
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60 room = room,
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61 occupant = occupant,
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62 });
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63 end
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64
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65 if module:get_option_boolean("muc_occupant_id", true) then
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66 module:add_feature(xmlns_occupant_id);
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67 module:hook("muc-disco#info", function (event)
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68 event.reply:tag("feature", { var = xmlns_occupant_id }):up();
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69 end);
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70
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71 module:hook("muc-broadcast-presence", update_occupant);
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72 module:hook("muc-occupant-pre-join", update_occupant);
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73 module:hook("muc-occupant-pre-change", update_occupant);
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74 module:hook("muc-occupant-groupchat", update_occupant);
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75 module:hook("muc-private-message", muc_private);
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76 end
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77
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78 return {
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79 get_room_salt = get_room_salt;
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80 get_occupant_id = get_occupant_id;
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81 get_occupant_id_from_jid = get_occupant_id_from_jid;
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82 };