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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 e6a3bdbce7b9
children
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Introduction
============

Conversations (an XMPP client for Android) is publishing PEP avatars in the webp file format. However Pidgin and other XMPP desktop clients can only show vcard avatars, that are in the PNG file format. This module is the [mod_pep_vcard_avatar](https://modules.prosody.im/mod_pep_vcard_avatar.html) module extended to also change the avatar file format to PNG.

This module needs `dwebp` from `webp` package as an additional dependency.

Configuration
=============

Enable the module as any other:

    modules_enabled = {
      "mod_pep_vcard_png_avatar";
    }

You MUSTN'T load mod\_pep\_vcard\_avatar if this module is loaded.

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

  ----- -------------
  trunk Works
  0.10  Should work
  0.9   Should work
  ----- -------------