prosody
a91494a4c3d0
plugins/muc/occupant.lib.lua

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plugins/muc/occupant.lib.lua @ 11980:a91494a4c3d0

mod_smacks: Fix empty cache check In Lua, every value except `nil` and `false` are considered true in boolean expressions, even `0` as here, which means this was dead code.
author Kim Alvefur <zash@zash.se>
date Wed, 01 Dec 2021 23:03:11 +0100
parent 7086:6cc7c9da29ed
child 12977:74b9e05af71e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 local pairs = pairs;
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2 local setmetatable = setmetatable;
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3 local st = require "util.stanza";
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4 local util = module:require "muc/util";
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5
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6 local function get_filtered_presence(stanza)
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7 return util.filter_muc_x(st.clone(stanza));
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8 end
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9
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10 local occupant_mt = {};
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11 occupant_mt.__index = occupant_mt;
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12
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13 local function new_occupant(bare_real_jid, nick)
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14 return setmetatable({
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15 bare_jid = bare_real_jid;
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16 nick = nick; -- in-room jid
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17 sessions = {}; -- hash from real_jid to presence stanzas. stanzas should not be modified
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18 role = nil;
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19 jid = nil; -- Primary session
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20 }, occupant_mt);
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21 end
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22
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23 -- Deep copy an occupant
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24 local function copy_occupant(occupant)
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25 local sessions = {};
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26 for full_jid, presence_stanza in pairs(occupant.sessions) do
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27 -- Don't keep unavailable presences, as they'll accumulate; unless they're the primary session
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28 if presence_stanza.attr.type ~= "unavailable" or full_jid == occupant.jid then
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29 sessions[full_jid] = presence_stanza;
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30 end
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31 end
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32 return setmetatable({
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33 bare_jid = occupant.bare_jid;
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34 nick = occupant.nick;
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35 sessions = sessions;
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36 role = occupant.role;
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37 jid = occupant.jid;
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38 }, occupant_mt);
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39 end
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40
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41 -- finds another session to be the primary (there might not be one)
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42 function occupant_mt:choose_new_primary()
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43 for jid, pr in self:each_session() do
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44 if pr.attr.type == nil then
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45 return jid;
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46 end
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47 end
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48 return nil;
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49 end
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50
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51 function occupant_mt:set_session(real_jid, presence_stanza, replace_primary)
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52 local pr = get_filtered_presence(presence_stanza);
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53 pr.attr.from = self.nick;
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54 pr.attr.to = real_jid;
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55
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56 self.sessions[real_jid] = pr;
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57 if replace_primary then
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58 self.jid = real_jid;
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59 elseif self.jid == nil or (pr.attr.type == "unavailable" and self.jid == real_jid) then
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60 -- Only leave an unavailable presence as primary when there are no other options
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61 self.jid = self:choose_new_primary() or real_jid;
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62 end
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63 end
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64
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65 function occupant_mt:remove_session(real_jid)
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66 -- Delete original session
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67 self.sessions[real_jid] = nil;
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68 if self.jid == real_jid then
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69 self.jid = self:choose_new_primary();
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70 end
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71 end
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72
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73 function occupant_mt:each_session()
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74 return pairs(self.sessions)
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75 end
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76
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77 function occupant_mt:get_presence(real_jid)
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78 return self.sessions[real_jid or self.jid]
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79 end
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80
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81 return {
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82 new = new_occupant;
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83 copy = copy_occupant;
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84 mt = occupant_mt;
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85 }