view 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>
date Sun, 22 Aug 2021 13:22:59 +0200
parents 8de50be756e5
children
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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.
}
```