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annotate mod_muc_restrict_pm/mod_muc_restrict_pm.lua @ 5914:d3610fb965d6

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mod_muc_restrict_pm: Backport changes from upstream timber patch.
author Nicholas George <wirlaburla@worlio.com>
date Fri, 24 May 2024 18:30:47 -0500
parents d82c0383106a
children
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1 local st = require "util.stanza";
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2 local muc_util = module:require "muc/util";
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3 local valid_roles = muc_util.valid_roles;
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4
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5 -- Backported backwards compatibility map (Thanks MattJ)
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6 local compat_map = {
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7 everyone = "visitor";
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8 participants = "participant";
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9 moderators = "moderator";
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10 members = "affiliated";
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11 };
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12
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13 local function get_allow_pm(room)
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14 local val = room._data.allow_pm;
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15 return compat_map[val] or val or 'visitor';
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16 end
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17
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18 local function set_allow_pm(room, val)
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19 if get_allow_pm(room) == val then return false; end
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20 room._data.allow_pm = val;
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21 return true;
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22 end
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23
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24 local function get_allow_modpm(room)
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25 return room._data.allow_modpm or false;
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26 end
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27
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28 local function set_allow_modpm(room, val)
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29 if get_allow_modpm(room) == val then return false; end
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30 room._data.allow_modpm = val;
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31 return true;
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32 end
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33
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34 module:hook("muc-config-form", function(event)
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35 local pmval = get_allow_pm(event.room);
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36 table.insert(event.form, {
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37 name = 'muc#allow_pm';
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38 type = 'list-single';
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39 label = 'Allow PMs from';
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40 options = {
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41 { value = 'visitor', label = 'Everyone', default = pmval == 'visitor' },
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42 { value = 'participant', label = 'Participants', default = pmval == 'participant' },
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43 { value = 'affiliated', label = 'Members', default = pmval == 'affiliated' },
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44 { value = 'moderator', label = 'Moderators', default = pmval == 'moderator' },
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45 { value = 'none', label = 'No one', default = pmval == 'none' }
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46 }
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47 });
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48 table.insert(event.form, {
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49 name = 'muc#allow_modpm';
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50 type = 'boolean';
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51 label = 'Allow PMs to moderators';
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52 value = get_allow_modpm(event.room)
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53 });
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54 end);
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55
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56 module:hook("muc-config-submitted/muc#allow_pm", function(event)
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57 if set_allow_pm(event.room, event.value) then
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58 event.status_codes["104"] = true;
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59 end
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60 end);
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61
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62 module:hook("muc-config-submitted/muc#allow_modpm", function(event)
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63 if set_allow_modpm(event.room, event.value) then
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64 event.status_codes["104"] = true;
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65 end
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66 end);
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67
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68 module:hook("muc-private-message", function(event)
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69 local stanza, room = event.stanza, event.room;
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70 local from_occupant = room:get_occupant_by_nick(stanza.attr.from);
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71 local to_occupant = room:get_occupant_by_nick(stanza.attr.to);
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72
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73 -- To self is always okay
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74 if to_occupant.bare_jid == from_occupant.bare_jid then return; end
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75
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76 if get_allow_modpm(room) then
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77 if to_occupant and to_occupant.role == 'moderator'
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78 or from_occupant and from_occupant.role == "moderator" then
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79 return; -- Allow to/from moderators
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80 end
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81 end
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82
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83 local pmval = get_allow_pm(room);
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84
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85 -- Backported improved handling (Thanks MattJ)
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86 if pmval ~= "none" then
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87 if pmval == "affiliated" and room:get_affiliation(from_occupant.bare_jid) then
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88 return; -- Allow from affiliated users
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89 elseif valid_roles[from_occupant.role] >= valid_roles[pmval] then
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90 return; -- Allow from a permitted role
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91 end
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92 end
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93
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94 room:route_to_occupant(
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95 from_occupant,
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96 st.error_reply(stanza, "cancel", "policy-violation", "Private messages are restricted", room.jid)
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97 );
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98 return false;
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99 end, 1);