Mercurial > prosody-modules
view mod_filter_chatstates/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 | 9283a6bcf512 |
| children |
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--- summary: Drop chat states from messages to inactive sessions ... Introduction ============ Some mobile XMPP client developers consider [Chat State Notifications](http://xmpp.org/extensions/xep-0085.html) to be a waste of power and bandwidth, especially when the user is not actively looking at their device. This module will filter them out while the session is considered inactive. It depends on [mod\_csi](/mod_csi.html) for deciding when to begin and end filtering. Configuration ============= There is no configuration for this module, just add it to modules\_enabled as normal. Compatibility ============= ----- ------- 0.9 Works ----- -------