Kbin

Kbin is a decentralized content aggregator and microblogging platform running on the Fediverse network. It can communicate with many other ActivityPub services, including Mastodon, Lemmy, Pleroma, Peertube. The initiative aims to promote a free and open internet.

This is a very early beta version, and a lot of features are currently broken or in active development, such as federation.

Currently, a new frontend is being implemented on develop branch. In the next stage, a similar refactor will go through the backend and the project will be prepared for contribution.

• https://kbin.pub - project website
• https://karab.in - polish-lang instance
• https://dev.karab.in - instance for testing purposes only (main branch)
• https://lab.kbin.pub - instance for testing purposes only (develop branch)

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Apps

• kbin-mobile (Flutter / Dart) (currently transferred)

Libraries

• kbin-js-client (TypeScript) (currently transferred)
• kbin-dart-client (Dart) (currently transferred)

Getting Started

Requirements

https://symfony.com/doc/6.1/reference/requirements.html

• PHP version: 8.1 or higher
• GD or Imagemagick php extension
• NGINX / Apache / Caddy
• PostgreSQL
• Redis (optional)
• Mercure (optional)
• RabbitMQ (optional)
• Elasticsearch (optional) (deprecated)
• Cardano Node, Cardano Wallet (optional) (deprecated)

Frontend

https://github.com/symfony/ux

$ yarn install
$ yarn build

Install with Docker

Based on https://github.com/dunglas/symfony-docker

Develop

1. If not already done, install Docker Compose
2. Run docker compose build --pull --no-cache to build fresh images
3. Run docker compose up (the logs will be displayed in the current shell)
4. Open https://app.localhost in your favorite web browser and accept the auto-generated TLS certificate
5. Run docker compose down --remove-orphans to stop the Docker containers.

$ docker compose exec php bin/console doctrine:fixtures:load
$ docker compose exec php bin/phpunit

# Using Xdebug
# Linux / Mac
$ XDEBUG_MODE=debug docker compose up -d
# Windows
$ set XDEBUG_MODE=debug&& docker compose up -d&set XDEBUG_MODE=

Production

$ APP_ENV=dev SERVER_NAME=dev.karab.in \
APP_SECRET=acme \
CADDY_MERCURE_JWT_SECRET='!ChangeThisMercureHubJWTSecretKey!' \
POSTGRES_USER=kbin \
POSTGRES_PASSWORD=acme \
POSTGRES_DB=kbin \
CADDY_MERCURE_URL="https://example.com/.well-known/mercure" \
KBIN_DEFAULT_LANG=pl \
docker compose -f docker-compose.yml -f docker-compose.prod.yml up -d

Deploying on Multiple Nodes

If you want to deploy your app on a cluster of machines, you can use Docker Swarm, which is compatible with the provided Compose files.

Configuration

Admin user

# Create new user (without email verification)
$ docker compose exec php bin/console kbin:user:create username email@exmple.com password
# Grant administrator privileges
$ docker compose exec php bin/console kbin:user:admin username

Media

$ mkdir public/media
$ chmod 755 public/media
$ chown 82:82 public/media

Elasticsearch

$ docker compose exec php bin/console fos:elastica:create
$ docker compose exec php bin/console fos:elastica:populate

JWT keys

// @todo 

Next, set up your instance https://localhost/admin

Backup and restore

Database

# Backup
$ docker exec -it database pg_dump -U kbin kbin > dump_`date +%d-%m-%Y"_"%H_%M_%S`.sql
# Restore
$ docker compose exec -T database psql -U kbin kbin < dump.sql

Images

// @todo rsync

Troubleshooting

Editing Permissions on Linux

If you work on linux and cannot edit some of the project files right after the first installation, you can run docker compose run --rm php chown -R $(id -u):$(id -g) . to set yourself as owner of the project files that were created by the docker container.

Logs

$ docker compose logs -f
$ docker compose exec php tail var/log/prod.log

Cache

$ docker compose exec php bin/console cache:clear

Federation

Official Documents

• ActivityPub standard
• ActivityPub vocabulary

Unofficial Sources

• A highly opinionated guide to learning about ActivityPub
• ActivityPub as it has been understood
• Schema Generator 3: A Step Towards Redecentralizing the Web!
• API Platform ActivityPub

Documentation

• Kbin REST API Reference
• Kbin ActivityPub Reference
• Kbin GraphQL Reference

Sponsors and partners

Contributing

• Official repository
• Translations (currently transferred)

License

AGPL-3.0 license