Mercurial > prosody-modules
view mod_require_otr/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 | 4d73a1a6ba68 |
| children |
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--- labels: - 'Stage-Stable' summary: 'Enforce a policy for OTR-encrypted messages' ... Introduction ------------ [OTR, "Off The Record"](https://otr.cypherpunks.ca/), encryption allows clients to encrypt messages such that the server cannot read/modify them. This module allows the server admin to require that all messages are OTR-encrypted. Configuration ------------- Just enable the module by adding it to your global `modules_enabled`, or if you only want to load it on a single host you can load it only for one host like this: VirtualHost "example.com" modules_enabled = { "require_otr" } #### Compatibility ------ ------- 0.10 Works 0.9 Works 0.8 Works ------ -------