Mercurial > prosody-modules

annotate mod_ping_muc/mod_ping_muc.lua @ 5139:449e4ca4de32

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mod_unified_push: Remove dependency on trunk util.jwt (0.12 compat) This should allow the module to work on 0.12, while preserving expiry checking (which was not built in to 0.12's util.jwt).
author Matthew Wild <mwild1@gmail.com>
date Tue, 10 Jan 2023 16:34:21 +0000
parents 0772facc786f
children
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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 if module:get_host_type() ~= "local" then
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7 module:log("error", "mod_%s must be loaded as a regular module, not on Components", module.name);
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8 return
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9 end
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11 module:depends "track_muc_joins";
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12 module:add_feature("https://modules.prosody.im/mod_" .. module.name);
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13
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14 local local_sessions = prosody.hosts[module.host].sessions;
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15
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16 module:hook_global("s2s-destroyed", function(event)
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17 local s2s_session = event.session;
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18 if s2s_session.direction == "outgoing" and s2s_session.from_host ~= module.host then
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19 return
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20 elseif s2s_session.direction == "incoming" and s2s_session.to_host ~= module.host then
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21 return
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22 end
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23
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24 local related_hosts = set.new({ s2s_session.direction == "outgoing" and s2s_session.to_host or s2s_session.from_host });
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25
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26 if s2s_session.hosts then
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27 -- While rarely used, multiplexing is still supported
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28 for host, state in pairs(s2s_session.hosts) do if state.authed then related_hosts:add(host); end end
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29 end
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30
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31 for _, user_session in pairs(local_sessions) do
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32 for _, session in pairs(user_session.sessions) do
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33 if session.rooms_joined then
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34 for room, info in pairs(session.rooms_joined) do
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35 local nick = info.nick or info;
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36 local room_nick = room .. "/" .. nick;
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37 if related_hosts:contains(jid.host(room)) then
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38 -- User is in a MUC room for which the s2s connection was lost. Now what?
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39
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40 -- Self-ping
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41 -- =========
a7c0c70e64b6 mod_ping_muc: Yet another attempt to improve MUC reliability
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42 --
a7c0c70e64b6 mod_ping_muc: Yet another attempt to improve MUC reliability
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43 -- Response of <iq type=result> means the user is still in the room
a7c0c70e64b6 mod_ping_muc: Yet another attempt to improve MUC reliability
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44 -- (and self-ping is supported), so we do nothing.
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45 --
a7c0c70e64b6 mod_ping_muc: Yet another attempt to improve MUC reliability
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46 -- An error reply either means the user has fallen out of the room,
a7c0c70e64b6 mod_ping_muc: Yet another attempt to improve MUC reliability
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47 -- or that self-ping is unsupported. In the later case, whether the
a7c0c70e64b6 mod_ping_muc: Yet another attempt to improve MUC reliability
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48 -- user is still joined is indeterminate and we might as well
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49 -- pretend they fell out.
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50 module:send_iq(st.iq({ type = "get"; id = id.medium(); from = session.full_jid; to = room_nick })
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51 :tag("ping", { xmlns = "urn:xmpp:ping"; }))
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52 :catch(function(err)
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53 module:send(
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54 st.presence({ type = "unavailable"; id = id.medium(); to = session.full_jid; from = room_nick })
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55 :tag("x", { xmlns = "http://jabber.org/protocol/muc#user" })
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56 :tag("item", { affiliation = "none"; role = "none" })
a7c0c70e64b6 mod_ping_muc: Yet another attempt to improve MUC reliability
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57 :text_tag("reason", err.text or "Connection to remote server lost")
a7c0c70e64b6 mod_ping_muc: Yet another attempt to improve MUC reliability
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58 :up()
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59 :tag("status", { code = "110" }):up()
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60 :tag("status", { code = "333" }):up()
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61 :reset());
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62 end);
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63 -- TODO do this with some delay?
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64 end
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65 end
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66
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67 end
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68 end
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69 end
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70 end);