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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 058844edcaaf
children
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---
labels:
- 'Stage-Alpha'
- ArchiveStorage
summary: 'Storage module using mod\_muc\_log data with new stanza archive API'
---

Introduction
============

[mod\_muc\_log] provided logging of chatrooms running on the server to
Prosody's data store. This module gives access to this data using the
0.10+ stanza archive API, allowing legacy log data to be used with
[mod\_mam\_muc] and [mod\_http\_muc\_log].

Details
=======

Replace [mod\_muc\_log] and [mod\_muc\_log\_http] in your config
with

``` {.lua}
Component "conference.example.org" "muc"
modules_enabled = {
  -- "muc_log"; -- functionality replaced by mod_mam_muc + mod_storage_muc_log
    "mam_muc"; -- Does logging to storage backend configured below

    -- "muc_log_http"; -- Replaced by the mod_http_muc_log
    "http_muc_log";
}
storage = {
  muc_log = "muc_log";
}
```

Compatibility
=============

  version   status
  --------- ---------------
  0.9       unknown
  0.10      works
  0.11      does not work