Database integration, permissions and custom routes in plugin

[KieronWiltshire]

I'll define my requirements in the form of conversation.

• A link will be generated and given to the user within Minecraft.
• The user can click this link, and if the user is authenticated and has the necessary permissions, then he/she can link their in-game Minecraft account with their forum account.

I understand how to achieve this, my concern is getting the data and specifying custom routes and permissions.

[yariplus]

Using only the currently logged in nodebb user and minecraft player.

Two routes needed:

• Server-only route: POST route. Requires a unique key parameter. Only the forum and the minecraft server know the key. e.g. /mc/link?key=key
• User route: GET route. Used to link accounts, requires a UUID and a unique player key. e.g. /mc/link/:uuid/:key

Minimum two DB keys need:

• {uuid}:key String key, stores the unique player key for the UUID. (Could also be a hash to store additional data.)
• user:{uid}:uuid String key, stores the UUID linked to the user. (Could also be stored on the user hash, or made into a set for multiple linkings.)

Process:

https://www.lucidchart.com/documents/view/382333e7-c772-43b7-8061-57b3bbd83e97

• Minecraft player types a command.
• Server users server-only route to tell the forum it needs a registration link. Sending the unique key to verify the request is valid.
• Forum creates a unique player key and stores it in the DB, then sends the player key to the server.
• Server gives a link to the player, using the unique player key and the players' UUID.
• User visits link, if the user is logged in, and the uuid-key pair matches what is already in the DB, then the accounts are linked, using additional DB entries.
• The player key is deleted.

Concerns:

• The player key should expire relatively quickly, like 5 minutes.
• Invalid requests to the user route should be monitored and blocked after a low threshold, like 3 tries.
• NodeBB middleware already validates the logged in user, which is why we do no additional checks.

Note:

On the last line in the diagram, I send a confirmation message, but we can't actually do this because we have not established a persistent connection. You could solve this by either having an http server on the server, or creating a socket connection to the forum.

Or you could use Minecraft-Integration