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annotate mod_groups_muc_bookmarks/mod_groups_muc_bookmarks.lua @ 4861:5fadb991003d

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mod_groups_muc_bookmarks: Switch to XEP-0402 Rationale: Look at the diffstat
author Kim Alvefur <zash@zash.se>
date Sat, 08 Jan 2022 02:57:36 +0100
parents 240fa534f586
children 9a8a43d0faed
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b3e0295e14a3 mod_groups_muc_bookmarks: manage PEP (XEP-0048) bookmarks of group members
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1 local jid_split = require "util.jid".split;
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2
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3 local st = require "util.stanza";
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4
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5 local mod_groups = module:depends("groups_internal")
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6 local mod_pep = module:depends("pep")
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7
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8 local XMLNS_BM2 = "urn:xmpp:bookmarks:1";
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9 local XMLNS_XEP0060 = "http://jabber.org/protocol/pubsub";
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10
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11 local default_options = {
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12 ["persist_items"] = true;
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13 ["max_items"] = "max";
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14 ["send_last_published_item"] = "never";
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15 ["access_model"] = "whitelist";
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16 };
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17
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18 local function get_current_bookmarks(jid, service)
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19 local ok, items = service:get_items(XMLNS_BM2, jid)
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20 if not ok then return nil, items; end
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21 return items or {};
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22 end
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23
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24 local function update_bookmark(jid, service, room, bookmark)
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25 local ok, err = service:publish(XMLNS_BM2, jid, room, bookmark, default_options);
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26 if ok then
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27 module:log("debug", "found existing matching bookmark, updated")
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28 else
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29 module:log("error", "failed to update bookmarks: %s", err)
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30 end
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31 end
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32
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33 local function find_matching_bookmark(storage, room)
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34 return storage[room];
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35 end
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36
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37 local function inject_bookmark(jid, room, autojoin, name)
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38 local pep_service = mod_pep.get_pep_service(jid_split(jid))
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39
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40 local current, err = get_current_bookmarks(jid, pep_service);
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41 if err then
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42 module:log("error", "Could not retrieve existing bookmarks for %s: %s", jid, err);
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43 return;
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44 end
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45 local found = find_matching_bookmark(current, room)
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46 if found then
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47 local existing = found:get_child("conference", XMLNS_BM2);
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48 if autojoin ~= nil then
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49 existing.attr.autojoin = autojoin and "true" or "false"
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50 end
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51 if name ~= nil then
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52 -- do not change already configured names
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53 if not existing.attr.name then
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54 existing.attr.name = name
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55 end
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56 end
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57 else
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58 module:log("debug", "no existing bookmark found, adding new")
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59 found = st.stanza("item", { xmlns = XMLNS_XEP0060; id = room })
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60 :tag("conference", { xmlns = XMLNS_BM2; name = name; autojoin = autojoin and "true" or "false"; })
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61 end
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62
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63 update_bookmark(jid, pep_service, current, room, found)
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64 end
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65
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66 local function remove_bookmark(jid, room, autojoin, name)
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67 local pep_service = mod_pep.get_pep_service(jid_split(jid))
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68
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69 return pep_service:retract(XMLNS_BM2, jid, room, st.stanza("retract", { id = room }));
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70 end
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71
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72 local function handle_user_added(event)
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73 if not event.group_info.muc_jid then
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74 module:log("debug", "ignoring user added event on group %s because it has no MUC", event.id)
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75 return
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76 end
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77 local jid = event.user .. "@" .. event.host
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78 inject_bookmark(jid, event.group_info.muc_jid, true, event.group_info.name)
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79 end
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80
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81 local function handle_user_removed(event)
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82 if not event.group_info.muc_jid then
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83 module:log("debug", "ignoring user removed event on group %s because it has no MUC", event.id)
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84 return
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85 end
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86 -- Removing the bookmark is fine as the user just lost any privilege to
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87 -- be in the MUC (as group MUCs are members-only).
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88 local jid = event.user .. "@" .. event.host
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89 remove_bookmark(jid, event.group_info.muc_jid, true, event.group_info.name)
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90 end
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91
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92 module:hook("group-user-added", handle_user_added)
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93 module:hook("group-user-removed", handle_user_removed)