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mod_ping_muc/mod_ping_muc.lua @ 4912:b45c23ce24ba
mod_register_web: Include HTML templates in rock (thanks unbunt)
Makes the module usable with the new plugin installer in Prosody 0.12
author | Kim Alvefur <zash@zash.se> |
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date | Wed, 30 Mar 2022 17:52:41 +0200 |
parent | 4887:806f7c8d830b |
child | 5130:0772facc786f |
rev | line source |
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mod_ping_muc: Yet another attempt to improve MUC reliability
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1 local id = require "util.id"; |
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2 local jid = require "util.jid"; |
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3 local set = require "util.set"; |
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4 local st = require "util.stanza"; |
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5 |
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6 module:depends "track_muc_joins"; |
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7 module:add_feature("https://modules.prosody.im/mod_" .. module.name); |
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8 |
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9 local local_sessions = prosody.hosts[module.host].sessions; |
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10 |
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11 module:hook_global("s2s-destroyed", function(event) |
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12 local s2s_session = event.session; |
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13 if s2s_session.direction == "outgoing" and s2s_session.from_host ~= module.host then |
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14 return |
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15 elseif s2s_session.direction == "incoming" and s2s_session.to_host ~= module.host then |
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16 return |
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17 end |
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18 |
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19 local related_hosts = set.new({ s2s_session.direction == "outgoing" and s2s_session.to_host or s2s_session.from_host }); |
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20 |
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21 if s2s_session.hosts then |
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22 -- While rarely used, multiplexing is still supported |
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23 for host, state in pairs(s2s_session.hosts) do if state.authed then related_hosts:add(host); end end |
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24 end |
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25 |
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26 for _, user_session in pairs(local_sessions) do |
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27 for _, session in pairs(user_session.sessions) do |
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28 if session.rooms_joined then |
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29 for room, info in pairs(session.rooms_joined) do |
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30 local nick = info.nick or info; |
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31 local room_nick = room .. "/" .. nick; |
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32 if related_hosts:contains(jid.host(room)) then |
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33 -- User is in a MUC room for which the s2s connection was lost. Now what? |
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34 |
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35 -- Self-ping |
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36 -- ========= |
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37 -- |
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38 -- Response of <iq type=result> means the user is still in the room |
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39 -- (and self-ping is supported), so we do nothing. |
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40 -- |
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41 -- An error reply either means the user has fallen out of the room, |
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42 -- or that self-ping is unsupported. In the later case, whether the |
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43 -- user is still joined is indeterminate and we might as well |
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44 -- pretend they fell out. |
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45 module:send_iq(st.iq({ type = "get"; id = id.medium(); from = session.full_jid; to = room_nick }) |
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46 :tag("ping", { xmlns = "urn:xmpp:ping"; })) |
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47 :catch(function(err) |
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48 module:send( |
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49 st.presence({ type = "unavailable"; id = id.medium(); to = session.full_jid; from = room_nick }) |
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50 :tag("x", { xmlns = "http://jabber.org/protocol/muc#user" }) |
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51 :tag("item", { affiliation = "none"; role = "none" }) |
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52 :text_tag("reason", err.text or "Connection to remote server lost") |
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53 :up() |
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54 :tag("status", { code = "110" }):up() |
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55 :tag("status", { code = "333" }):up() |
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56 :reset()); |
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57 end); |
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58 -- TODO do this with some delay? |
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59 end |
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60 end |
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61 |
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62 end |
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63 end |
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64 end |
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65 end); |