Synapse-Captcha

A custom captcha for Synapse. Disable registration in homeserver.yaml

Building

git clone https://codeberg.org/deathrow/synapse-captcha

cd synapse-captcha

docker build .

Modify config.sample.yaml to your needs and save as config.yaml The shared_secret can be found in homeserver.yaml.

Redirect to your docker installation:

(Modify for your needs)

    location /register {
        include /config/nginx/proxy.conf;
        include /config/nginx/resolver.conf;
        proxy_set_header Host $http_host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $remote_addr;
        proxy_set_header X-Forwarded-Proto $scheme;
        set $upstream_app matrix-registration;
        set $upstream_port 5000;
        set $upstream_proto http;
        proxy_pass $upstream_proto://$upstream_app:$upstream_port;
    }

ex. matrix.example.tld/register

Docker-compose example:

    build: ./images/synapse-captcha
    container_name: matrix-registration
    restart: always
    command: [
                "--config-path=/data/config.yaml",
                "serve"
            ]
    ports:
      - 127.0.0.1:5000:5000
    volumes:
      - ./matrix-registration_data:/data:Z
    networks:
      - matrix