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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 41dd405efb5a
children
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---
labels:
- 'Stage-Alpha'
summary: Sync avatars between vCards and PEP
---

## Introduction

This module pushes the users nickname and avatar from vCards into PEP,
or into vCards from PEP. This allows interop between older clients that
use [XEP-0153: vCard-Based Avatars] to see the avatars of clients that
use [XEP-0084: User Avatar] and vice versa.

Also see [XEP-0398: User Avatar to vCard-Based Avatars Conversion].

## Configuration

Simply [enable it like most other modules][doc:installing_modules#prosody-modules],
no further configuration needed.

## Compatibility

  ------- --------------------------------
  trunk   Use mod\_vcard\_legacy instead
  0.11    Use mod\_vcard\_legacy instead
  0.10    Works
  0.9     Does not work
  0.8     Does not work
  ------- --------------------------------