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configuring-playbook-bridge-mautrix-discord.md

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Setting up Mautrix Discord bridging (optional)

Note: bridging to Discord can also happen via the mx-puppet-discord and matrix-appservice-discord bridges supported by the playbook.

  • For using as a Bot we recommend the Appservice Discord, because it supports plumbing.
  • For personal use with a discord account we recommend the mautrix-discord bridge (the one being discussed here), because it is the most fully-featured and stable of the 3 Discord bridges supported by the playbook.

The playbook can install and configure mautrix-discord for you.

See the project's documentation to learn what it does and why it might be useful to you.

Prerequisites

There are 2 ways to login to discord using this bridge, either by scanning a QR code using the Discord mobile app or by using a Discord token.

If this is a dealbreaker for you, consider using one of the other Discord bridges supported by the playbook: mx-puppet-discord or matrix-appservice-discord. These come with their own complexity and limitations, however, so we recommend that you proceed with this one if possible.

Enable Appservice Double Puppet or Shared Secret Auth (optional)

If you want to set up Double Puppeting (hint: you most likely do) for this bridge automatically, you need to have enabled Appservice Double Puppet or Shared Secret Auth service for this playbook.

For details about configuring Double Puppeting for this bridge, see the section below: Set up Double Puppeting

Adjusting the playbook configuration

To enable the bridge, add the following configuration to your inventory/host_vars/matrix.example.com/vars.yml file:

matrix_mautrix_discord_enabled: true

You may optionally wish to add some Additional configuration, or to prepare for double-puppeting before the initial installation.

Additional configuration

There are some additional things you may wish to configure about the bridge.

Take a look at:

  • roles/custom/matrix-bridge-mautrix-discord/defaults/main.yml for some variables that you can customize via your vars.yml file
  • roles/custom/matrix-bridge-mautrix-discord/templates/config.yaml.j2 for the bridge's default configuration. You can override settings (even those that don't have dedicated playbook variables) using the matrix_mautrix_discord_configuration_extension_yaml variable

Installing

After configuring the playbook, run it with playbook tags as below:

ansible-playbook -i inventory/hosts setup.yml --tags=setup-all,ensure-matrix-users-created,start

Notes:

  • The ensure-matrix-users-created playbook tag makes the playbook automatically create the bot's user account.

  • The shortcut commands with the just program are also available: just install-all or just setup-all

    just install-all is useful for maintaining your setup quickly (2x-5x faster than just setup-all) when its components remain unchanged. If you adjust your vars.yml to remove other components, you'd need to run just setup-all, or these components will still remain installed.

Usage

Logging in

Method 1: Login using QR code (recommended)

For using this bridge, you would need to authenticate by scanning a QR code with the Discord app on your phone.

You can delete the Discord app after the authentication process.

Method 2: Login using Discord token (not recommended)

To acquire the token, open Discord in a private browser window. Then open the developer settings (keyboard shortcut might be "ctrl+shift+i" or by pressing "F12"). Navigate to the "Network" tab then reload the page. In the URL filter or search bar type "/api" and find the response with the file name of "library". Under the request headers you should find a variable called "Authorization", this is the token to your Discord account. After copying the token, you can close the browser window.

Bridging

  1. Start a chat with @discordbot:example.com (where example.com is your base domain, not the matrix. domain).
  2. If you would like to login to Discord using a token, send login-token command, otherwise, send login-qr command.
  3. You'll see a QR code which you need to scan with the Discord app on your phone. You can scan it with the camera app too, which will open Discord, which will then instruct you to scan it a 2nd time in the Discord app.
  4. After confirming (in the Discord app) that you'd like to allow this login, the bot should respond with "Succcessfully authenticated as …"
  5. Now that you're logged in, you can send a help command to the bot again, to see additional commands you have access to
  6. Some Direct Messages from Discord should start syncing automatically
  7. If you'd like to bridge guilds:
    • send guilds status to see the list of guilds
    • for each guild that you'd like bridged, send guilds bridge GUILD_ID --entire
  8. You may wish to uninstall the Discord app from your phone now. It's not needed for the bridge to function.

💡 Set up Double Puppeting

After successfully enabling bridging, you may wish to set up Double Puppeting (hint: you most likely do).

To set it up, you have 2 ways of going about it.

Method 1: automatically, by enabling Appservice Double Puppet or Shared Secret Auth

The bridge automatically performs Double Puppeting if Appservice Double Puppet or Shared Secret Auth service is configured and enabled on the server for this playbook.

Enabling Appservice Double Puppet is the recommended way of setting up Double Puppeting, as it's easier to accomplish, works for all your users automatically, and has less of a chance of breaking in the future.

Enabling double puppeting by enabling the Shared Secret Auth service works at the time of writing, but is deprecated and will stop working in the future.

Method 2: manually, by asking each user to provide a working access token

When using this method, each user that wishes to enable Double Puppeting needs to follow the following steps:

  • retrieve a Matrix access token for yourself. Refer to the documentation on how to do that.

  • send the access token to the bot. Example: login-matrix MATRIX_ACCESS_TOKEN_HERE

  • make sure you don't log out the Mautrix-Discord device some time in the future, as that would break the Double Puppeting feature