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view mod_nooffline_noerror/mod_nooffline_noerror.lua @ 4651:8231774f5bfd

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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>
date Sun, 22 Aug 2021 13:22:59 +0200
parents e0f3e29ab18a
children
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-- Ignore disabled offline storage
--
-- Copyright (C) 2019-2020 Thilo Molitor
--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--

-- depend on mod_mam to make sure mam is at least loaded and active
module:depends "mam";

-- ignore offline messages and don't return any error (the message will be already in MAM at this point)
-- this is *only* triggered if mod_offline is *not* loaded and completely ignored otherwise
module:hook("message/offline/handle", function(event)
	local log = event.origin and event.origin.log or module._log;
	if log then
		log("info", "Ignoring offline message (mod_offline seems *not* to be loaded)...");
	end
	return true;
end, -100);