Add regsitration token

.env.sample

@@ -33,6 +33,9 @@ ALLOW_PUBLIC_ROOMS_FEDERATION=false
 ENABLE_REGISTRATION=false
 PASSWORD_LOGIN_ENABLED=true
 
+# Token based registration. Enable ADMIN_INTERFACE_ENABLED=1 (below) to use the admin interface to generate tokens.
+#REGISTRATION_REQUIRES_TOKEN=true
+
 ## Room auto-join
 
 #AUTO_JOIN_ROOM_ENABLED=1

compose.yml

@@ -53,6 +53,7 @@ services:
       - ENABLE_3PID_LOOKUP
       - ENABLE_ALLOWLIST
       - ENABLE_REGISTRATION
+      - REGISTRATION_REQUIRES_TOKEN
       - ENCRYPTED_BY_DEFAULT
       - FEDERATION_ALLOWLIST
       - LETSENCRYPT_HOST=${DOMAIN}

homeserver.yaml.tmpl

@@ -132,6 +132,8 @@ turn_allow_guests: {{ env "TURN_ALLOW_GUESTS" }}
 # https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#enable_registration
 enable_registration: {{ env "ENABLE_REGISTRATION" }}
 
+registration_requires_token: {{ env "REGISTRATION_REQUIRES_TOKEN" }}
+
 # https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#enable_3pid_lookup
 enable_3pid_lookup: {{ env "ENABLE_3PID_LOOKUP" }}