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annotate mod_ping_muc/mod_ping_muc.lua @ 5585:5b316088bef5

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mod_rest: Use logger of HTTP request in trunk In Prosody trunk rev c975dafa4303 each HTTP request gained its own log sink, to make it easy to log things related to each request and group those messages. Especially where async is used, spreading the request and response apart as mod_rest does with iq stanzas, this grouped logging should help find related messages.
author Kim Alvefur <zash@zash.se>
date Fri, 07 Jul 2023 00:10:37 +0200
parents 0772facc786f
children d6a695abb33c
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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 -- =========
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42 --
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43 -- Response of <iq type=result> means the user is still in the room
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44 -- (and self-ping is supported), so we do nothing.
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45 --
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46 -- An error reply either means the user has fallen out of the room,
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47 -- or that self-ping is unsupported. In the later case, whether the
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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" })
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57 :text_tag("reason", err.text or "Connection to remote server lost")
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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);