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annotate mod_block_strangers/mod_block_strangers.lua @ 5668:ecfd7aece33b

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mod_measure_modules: Report module statuses via OpenMetrics Someone in the chat asked about a health check endpoint, which reminded me of mod_http_status, which provides access to module statuses with full details. After that, this idea came about, which seems natural. As noted in the README, it could be used to monitor that critical modules are in fact loaded correctly. As more modules use the status API, the more useful this module and mod_http_status becomes.
author Kim Alvefur <zash@zash.se>
date Fri, 06 Oct 2023 18:34:39 +0200
parents 38365c1f1fe4
children
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954532e273be mod_block_strangers: Module to block message and iqs from people not on your roster
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1
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82834df1dea6 mod_block_strangers: Add missing import of util.stanza
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2 local st = require"util.stanza";
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3 local jid_split = require "util.jid".split;
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4 local jid_bare = require "util.jid".bare;
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5 local is_contact_subscribed = require "core.rostermanager".is_contact_subscribed;
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6 local full_sessions = prosody.full_sessions;
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7
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8 local function has_directed_presence(user, jid)
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9 local session = full_sessions[user];
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10 if session then
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11 local directed = session.directed;
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12 if directed then
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13 return directed[jid];
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14 end
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15 end
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16 end
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18 function check_subscribed(event)
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19 local stanza = event.stanza;
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20 local to_user, to_host, to_resource = jid_split(stanza.attr.to);
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21 local from_jid = jid_bare(stanza.attr.from);
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22 if to_user and not has_directed_presence(stanza.attr.to, from_jid) and not is_contact_subscribed(to_user, to_host, from_jid) then
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23 -- Allow all messages from your own jid
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24 if from_jid == to_user.."@"..to_host then
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25 return nil; -- Pass through
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26 end
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27 if to_resource and stanza.attr.type == "groupchat"
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28 or stanza.name == "iq" and (stanza.attr.type == "result" or stanza.attr.type == "error") then
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29 return nil; -- Pass through
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30 end
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31 if stanza.name == "iq" and ( stanza.attr.type == "get" or stanza.attr.type == "set" ) then
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32 event.origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
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33 end
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34 return true; -- Drop stanza
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35 end
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36 end
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38 module:hook("message/bare", check_subscribed, 200);
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39 module:hook("message/full", check_subscribed, 200);
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40 module:hook("iq/full", check_subscribed, 200);