FakeRelay/README.md

What is this?

FakeRelay is a tool for Mastodon admins to load statuses into their instances.

Why is it needed?

If you're on a small or solo instance, following a hashtag doesn't provide a lot of value. This is because you'll only see stuff that's on the instance's federated timeline... but if you're the only user, the federated timeline is the same as your timeline.

Discovering what to index isn't hard (I'm hitting big instances' /tags/{interestingTag}.json routes to fetch the content I want), but telling my instance that I want to bring over a toot isn't straightforward.

One thing any user can do is hit the /api/v2/search endpoint using resolve=true. That does accomplish the goal of fetching the status, but it's a synchronous call so it can take some seconds.

This project uses the ActivityPub /inbox endpoint as if it were a relay. And then, the request is queued and eventually processed.

How can I use it?

You need to get an api key

Ask the operator for an api key. If you want an api key for fakerelay.gervas.io, I'm @g3rv4@mastodonte.tech. Send me a toot with your instance domain and I'll get you one. The API key will be associated with your domain.

Add the relay to your instance

Your instance will receive traffic from this site as if it were a relay. But don't worry, it won't send anything except from the statuses you tell it to index.

You need to go to /admin/relays and add https://fakerelay.gervas.io/inbox as a relay. That's it! and you can remove it whenever you want.

Figure what you want to index

Use whatever logic you want to find stuff to index. On this example, I want to index https://mastodonte.tech/users/g3rv4/statuses/109370844647385274

Do a simple request

And all you need to do is a post asking for the site to index it to your site!

curl -X "POST" "https://fakerelay.gervas.io/index" \
     -H 'Authorization: Bearer {apiKey}' \
     -H 'Content-Type: application/x-www-form-urlencoded; charset=utf-8' \
     --data-urlencode "statusUrl=https://mastodonte.tech/users/g3rv4/statuses/109370844647385274"

Can I see a demo?

Sure! I recorded one here.

I want to run this myself!

Sure thing! The easiest way is doing so via docker-compose.

Setting up docker compose

I'm using this docker-compose.yml:

version: '2'
services:
  fakerelay:
    image: 'ghcr.io/g3rv4/fakerelay:latest'
    command: 'web'
    hostname: fakerelay
    environment:
      - ASPNETCORE_ENVIRONMENT=Production
      - ASPNETCORE_URLS=http://+:5000
      - CONFIG_PATH=/data/config.json
    restart: always
    volumes:
      - '/local/path/to/data:/data'
  cli:
    image: 'ghcr.io/g3rv4/fakerelay:latest'
    volumes:
      - '/local/path/to/data:/data'

That will store the configuration files at /local/path/to/data (they are a couple json files).

Configure the app

The first time you run this it needs to create a key, you can trigger that using:

docker-compose run --rm cli config {relayHost}

If you want requests to the homepage to redirect visitors somewhere, you can add a "HomeRedirect" entry on the generated config.json. The file would look like this:

{
    "PublicKey": "-----BEGIN PUBLIC KEY-----\n...\n-----END PUBLIC KEY-----",
    "PrivateKey": "-----BEGIN PRIVATE KEY-----\n...\n-----END PRIVATE KEY-----",
    "Host": "fakerelay.gervas.io",
    "HomeRedirect": "https://github.com/g3rv4/FakeRelay/"
}

List authorized hosts

g3rv4@s1:~/docker/FakeRelay$ docker-compose run --rm cli list-instances
┌─────────────────┬──────────────────────────────────────────────────────────────────────────────────────────┐
│ Host            │ Key                                                                                      │
├─────────────────┼──────────────────────────────────────────────────────────────────────────────────────────┤
│ m2.g3rv4.com    │ KlYKnm9GJcM0B1p8K98vw8FSpWzWOimZ7/3C9kTdWGUmK3xmFEJJwTZ1wqERVTugLH/9alYILFehqu9Ns2MEAw== │
│ mastodon.social │ 1TxL6m1Esx6tnv4EPxscvAmdQN7qSn0nKeyoM7LD8b9mz+GNfrKaHiWgiT3QcNMUA+dWLyWD8qyl1MuKJ+4uHA== │
└─────────────────┴──────────────────────────────────────────────────────────────────────────────────────────┘

Add authorized hosts

You can add hosts, and that will generate their tokens using the add-host command. That will output the key:

g3rv4@s1:~/docker/FakeRelay$ docker-compose run --rm cli host add mastodon.social
Key generated for mastodon.social
vti7J0MDDw1O5EPRwfuUafJJjpErhXTwECGEvuw/G4UVWgLXtnrnmPIRRsOcvMD0juwSlvUnchIzgla030AIRw==

Rotate a key

You can use update-host to rotate a hosts' key:

g3rv4@s1:~/docker/FakeRelay$ docker-compose run --rm cli host update mastodon.social
Key generated for mastodon.social
wpSX9xpPgX0gjgAxO0Jc+GLSOXubVgv73FOvAihR2EmgK/AfDHz21sF72uqrLnVGzcq2BDXosMeKdFR76q6fpg==

Remove a host

If you want to revoke a host's key, you can use delete-host:

g3rv4@s1:~/docker/FakeRelay$ docker-compose run --rm cli host delete mastodon.social
Key deleted for mastodon.social