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mod_block_registrations/README.markdown @ 5214:d5492bc861f6

mod_http_oauth2: Remove authorization codes after use RFC 6749 section 4.1.2 says: > The client MUST NOT use the authorization code more than once. Thus we clear it from the cache after use.
author Kim Alvefur <zash@zash.se>
date Mon, 06 Mar 2023 16:53:27 +0100
parent 2715:9b43b7fc3558
child 5421:a58ba20b3a71
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Introduction
============

On a server with public registration it is usually desirable to prevent
registration of certain "reserved" accounts, such as "admin".

This plugin allows you to reserve individual usernames, or those
matching certain patterns. It also allows you to ensure that usernames
conform to a certain pattern.

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

Enable the module as any other:

    modules_enabled = {
      "block_registrations";
    }

You can then set some options to configure your desired policy:

  Option                           Default         Description
  -------------------------------- --------------- -------------------------------------------------------------------------------------------------------------------------------------------------
  block\_registrations\_users      `{ "admin" }`   A list of reserved usernames
  block\_registrations\_matching   `{ }`           A list of [Lua patterns](http://www.lua.org/manual/5.1/manual.html#5.4.1) matching reserved usernames (slower than block\_registrations\_users)
  block\_registrations\_require    `nil`           A pattern that registered user accounts MUST match to be allowed

Some examples:

    block_registrations_users = { "admin", "root", "xmpp" }
    block_registrations_matching = {
      "master$" -- matches anything ending with master: postmaster, hostmaster, webmaster, etc.
    }
    block_registrations_require = "^[a-zA-Z0-9_.-]+$" -- Allow only simple ASCII characters in usernames

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

  ----- -------------
  0.9   Works
  0.8   Should work
  ----- -------------