view mod_seclabels/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 a1d641e88918
children
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---
labels:
- 'Stage-Alpha'
summary: Security Labels
...

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

This module implements [XEP-0258: Security Labels in XMPP], but not
actual policy enforcement. See for example [mod_firewall] for that.

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

As with all modules, you enable it by adding it to the modules\_enabled
list.

These options exist:

  Name                      Description             Default
  ------------------------- ----------------------- -------------
  security\_catalog\_name   Catalouge name          "Default"
  security\_catalog\_desc   Catalouge description   "My labels"

You can then add your labels in a table called security\_labels. They
can be both orderd and unorderd, but ordered comes first.

``` {.lua}
security_labels = {
  { -- This label will come first
    name = "Public",
    label = true, -- This is a label, but without the actual label.
      default = true -- This is the default label.
  },
  {
    name = "Private",
    label = "PRIVATE",
    color = "white",
    bgcolor = "blue"
  },
  Sensitive = { -- A Sub-selector
    SECRET = { -- The index is used as name
      label = true
    },
    TOPSECRET = { -- The order of this and the above is not guaranteed.
      color = "red",
      bgcolor = "black",
    }
  }
}
```

Each label can have the following properties:

  Name             Description                                               Default
  ---------------- --------------------------------------------------------- ----------------------------------------------------------
  name             The name of the label. Used for selector.                 Required.
  label            The actual label, ie `<esssecuritylabel/>`                Required, can be boolean for a empty label, or a string.
  display          The text shown as display marking.                        Defaults to the name
  color, bgcolor   The fore- and background color of the display marking     None
  default          Boolean, true for the default. Only one may be default.   false