File

mod_watchuntrusted/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
parent 3220:0e78523f8c20
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---
labels:
- 'Stage-Alpha'
summary: |
    Warn admins about outgoing s2s connections that are refused due to
    invalid or untrusted certificates
...

Introduction
============

Similar to mod\_watchregistrations, this module warns admins when an s2s
connection fails due for encryption or trust reasons.

The certificate shows the SHA1 hash, so it can easily be used together
with mod\_s2s\_auth\_fingerprint.

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

    modules_enabled = {
        -- other modules --
        "watchuntrusted",

    }

    untrusted_fail_watchers = { "admin@example.lit" }
    untrusted_fail_notification = "Establishing a secure connection from $from_host to $to_host failed. Certificate hash: $sha1. $errors"

  Option                          Default                                                                                                         Description
  ------------------------------- --------------------------------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------
  untrusted\_fail\_watchers       All admins                                                                                                      The users to send the message to
  untrusted\_fail\_notification   "Establishing a secure connection from \$from\_host to \$to\_host failed. Certificate hash: \$sha1. \$errors"   The message to send, \$from\_host, \$to\_host, \$sha1 and \$errors are replaced
  untrusted\_message\_type        `"chat"`                                                                                                        Which kind of message to send. `"normal"` or `"headline"` are other sensible options
  untrusted\_ignore\_domains      Empty                                                                                                           The domains that this module should not warn about

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

  ------- -------
  trunk   Works
  ------- -------