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mod_motd_sequential/README.markdown @ 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 |
parent | 1820:8de50be756e5 |
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--- labels: - 'Stage-Beta' summary: Sequential MOTD messages ... Introduction ============ mod\_motd\_sequential is a variant of [mod\_motd](https://prosody.im/doc/modules/mod_motd) that lets you specify a sequence of MOTD messages instead of a single static one. Each message is only sent once and the module keeps track of who as seen which message. Configuration ============= ``` lua modules_enabled = { -- other modules "motd_sequential"; } motd_sequential_messages = { "Hello and welcome to our service!", -- First login "Lorem ipsum dolor sit amet", -- Second time they login -- Add more messages here. } ```