Mercurial > prosody-modules
annotate mod_idlecompat/mod_idlecompat.lua @ 4651:8231774f5bfd
mod_cloud_notify_encrypted: Ensure body substring remains valid UTF-8
The `body:sub()` call risks splitting the string in the middle of a
multi-byte UTF-8 sequence. This should have been caught by util.stanza
validation, but that would have caused some havoc, at the very least causing
the notification to not be sent.
There have been no reports of this happening. Likely because this module
isn't widely deployed among users with languages that use many longer UTF-8
sequences.
The util.encodings.utf8.valid() function is O(n) where only the last
sequence really needs to be checked, but it's in C and expected to be fast.
author | Kim Alvefur <zash@zash.se> |
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date | Sun, 22 Aug 2021 13:22:59 +0200 |
parents | 4b58e35a72e0 |
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1 -- Last User Interaction in Presence via Last Activity compatibility module |
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2 -- http://xmpp.org/extensions/xep-0319.html |
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3 -- http://xmpp.org/extensions/xep-0256.html |
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4 -- Copyright (C) 2014 Tobias Markmann |
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5 -- |
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6 -- This file is MIT/X11 licensed. |
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7 |
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8 local st = require "util.stanza"; |
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9 local datetime = require "util.datetime"; |
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10 |
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11 local function on_presence(event) |
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12 local stanza = event.stanza; |
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13 |
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14 local last_activity = stanza:get_child("query", "jabber:iq:last"); |
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15 local has_idle = stanza:get_child("idle", "urn:xmpp:idle:1"); |
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16 if last_activity and not has_idle then |
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17 module:log("debug", "Adding XEP-0319 tag from Last Activity."); |
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18 local seconds = last_activity.attr.seconds; |
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19 local last_userinteraction = datetime.datetime(os.time() - seconds); |
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20 stanza:tag("idle", { xmlns = "urn:xmpp:idle:1", since = last_userinteraction }):up(); |
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21 end |
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22 end |
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23 |
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24 -- incoming |
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25 module:hook("presence/full", on_presence, 900); |
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26 module:hook("presence/bare", on_presence, 900); |
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27 |
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28 -- outgoing |
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29 module:hook("pre-presence/bare", on_presence, 900); |
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30 module:hook("pre-presence/full", on_presence, 900); |
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31 module:hook("pre-presence/host", on_presence, 900); |