Mercurial > prosody-modules
view mod_auth_external_insecure/README.markdown @ 5173:460f78654864
mod_muc_rtbl: also filter messages
This was a bit tricky because we don't want to run the JIDs
through SHA256 on each message. Took a while to come up with this
simple plan of just caching the SHA256 of the JIDs on the
occupants.
This will leave some dirt in the occupants after unloading the
module, but that should be ok; once they cycle the room, the
hashes will be gone.
This is direly needed, otherwise, there is a tight race between
the moderation activities and the actors joining the room.
| author | Jonas Schäfer <jonas@wielicki.name> |
|---|---|
| date | Tue, 21 Feb 2023 21:37:27 +0100 |
| parents | 8e58a1b78336 |
| children |
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--- labels: - 'Stage-Deprecated' - 'Type-Auth' summary: 'Authentication via external script/process (DEPRECATED)' ... Introduction ============ Allow client authentication to be handled by an external script/process. :::{.alert .alert-warning} **Warning:** This module is not currently maintained, and may be buggy and insecure in certain configurations/environments. It is **not** recommended for production use. Please use one of the [many other authentication modules](/type_auth). ::: Installation ============ mod\_auth\_external\_insecure depends on a Lua module called [lpty](http://www.tset.de/lpty/). You can install it on many platforms using [LuaRocks](http://luarocks.org/), for example: sudo luarocks install lpty Configuration ============= As with all auth modules, there is no need to add this to modules\_enabled. Simply add in the global section, or for the relevant hosts: authentication = "external_insecure" These options are specific to mod\_auth\_external\_insecure: -------------------------- ------------------------------------------------------------------------------------------------------------------------- external\_auth\_protocol May be "generic" or "ejabberd" (the latter for compatibility with ejabberd external auth scripts. Default is "generic". external\_auth\_command The command/script to execute. -------------------------- ------------------------------------------------------------------------------------------------------------------------- Two other options are also available, depending on whether the module is running in 'blocking' or 'non-blocking' mode: --------------------------- -------------- ------------------------------------------------------------------------------------------------------------------ external\_auth\_timeout blocking The number of seconds to wait for a response from the auth process. Default is 5. external\_auth\_processes non-blocking The number of concurrent processes to spawn. Default is 1, increase to handle high connection rates efficiently. --------------------------- -------------- ------------------------------------------------------------------------------------------------------------------ Blocking vs non-blocking ------------------------ Non-blocking mode is experimental and is disabled by default. Enable at your own risk if you fulfil these conditions: - Running Prosody trunk ([nightly](http://prosody.im/nightly/) build 414+) or Prosody 0.11.x. - [libevent](http://prosody.im/doc/libevent) is enabled in the config, and LuaEvent is available. - lpty (see installation above) is version 1.0.1 or later. ```lua external_auth_blocking = false; ``` Protocol ======== Prosody executes the given command/script, and sends it queries. Your auth script should simply read a line from standard input, and write the result to standard output. It must do this in a loop, until there's nothing left to read. Prosody can keep sending more lines to the script, with a command on each line. Each command is one line, and the response is expected to be a single line containing "0" for failure or "1" for success. Your script must respond with "0" for anything it doesn't understand. There are three commands used at the moment: auth ---- Check if a user's password is valid. Example: `auth:username:example.com:abc123` Note: The password can contain colons. Make sure to handle that. isuser ------ Check if a user exists. Example: `isuser:username:example.com` setpass ------- Set a new password for the user. Implementing this is optional. Example: `setpass:username:example.com:abc123` Note: The password can contain colons. Make sure to handle that. ejabberd compatibility --------------------- ejabberd implements a similar protocol. The main difference is that Prosody's protocol is line-based, while ejabberd's is length-prefixed. Add this to your config if you need to use an ejabberd auth script: external_auth_protocol = "ejabberd" Compatibility ============= ----- ------- 0.8 Works 0.9 Works ----- -------