nyx - Imageboard

A simple, dependency-free image board.

Requirements

• HTTPS Capable Host
• Being able to compile and run a go binary
• Disk Space

Installation

Simply go get the source code or compile it otherwise, dependencies are included.

Usage

By default nyx works in volatile-mode, all changes are only stored in memory and default credentials are setup in the database.

To overwrite these defaults, simply create the file config.yml or specify another file via the -config flag.

Hostnames

Nyx seperates hostnames as distinct namespaces with their own content.

At the moment you cannot port content between namespaces.

Administration

The administration panel is available under /admin/ (don't forget the trailing slash), the default login is admin with password admin. It is recommended to add a new administrator and delete the default ID.

Here you can add boards, set board rules and start a database cleanup.

The cleanup will remove entries older than 7 days, deleted and orphaned threads and replies.

Once logged in as administrator you can also delete posts on the setup boards or mark your own posts as special (though still anonymous)

Posting

Posts are limited to 10k characters and uploads to 10MB including Base64 overhead (realistically you should be able to upload a 7MB file)

Nyx includes a system called "Trollthrottle". It will rate content based on how well it compresses, it's length and number of lines and the occurence of (currently fixed) keywords.

The end result is a spam score and a captcha probability, both displayed along each post. The captcha probability specifies how like it is that a user will fail a captcha despite having entered it correctly. This is capped at 99%, which means only 1 out of 100 correct solutions will be accepted.

This systems does not stop all trolls but will make it harder for people to post spam by forcing them to do more work.

TripCodes

Tripcodes are non-traditional, they are calculated as the first 8 bytes of the Blake2b Hashsum of the entered Code in Base64 Encoding.

Tripcodes do not offer a guarantee that a user is who they say they are as the codes can be trivially cracked even on a mobile device.

Configuration

The configuration file is written in YAML.

The following is a list of options available (and supported);

• secret - Secret used for User Login, CSRF and Session Management, default is changeme
• listen_on - Defaults to :8080, specifies on which port the HTTP server is launched. Nyx will not utilize this value otherwise so proxying is safe.
• hosts - A whitelists of hostnames that are allowed to be used. Nyx uses hostnames to differentiate several board collections.
• db.file - File to use for data storage, defaults to :memory: which means in-memory storage
• site.title - Site Title
• site.description - Site Description
• captcha - Captcha Mode, currently only internal is supported

The config accepts other options but these may not be supported.