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.

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labels:
- 'Stage-Beta'
summary: 'Privacy lists (XEP-0016) support'
...

Introduction
------------

Privacy lists are a flexible method for blocking communications.

Originally known as mod\_privacy and bundled with Prosody, this module
is being phased out in favour of the newer simpler blocking (XEP-0191)
protocol, implemented in [mod\_blocklist][doc:modules:mod_blocklist].

Configuration
-------------

None. Each user can specify their privacy lists using their client (if
it supports XEP-0016).

Compatibility
-------------

  ------ -------
  0.9    Works
  0.10   Works
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