feat: turn config

Closes #17.

.env.sample

@@ -15,3 +15,11 @@ SYNAPSE_ADMIN_EMAIL=admin@example.com
 #KEYCLOAK_URL=
 #KEYCLOAK_CLIENT_ID=
 #SECRET_KEYCLOAK_CLIENT_SECRET_VERSION=v1
+
+#COMPOSE_FILE="compose.yml:compose.turn.yml"
+#TURN_ENABLED=1
+#TURN_URI=
+#TURN_USERNAME=
+#TURN_ALLOW_GUESTS=true
+#SECRET_TURN_SHARED_SECRET_VERSION=v1
+#SECRET_TURN_PASSWORD_VERSION=v1

compose.turn.yml

@@ -0,0 +1,22 @@
+---
+version: "3.8"
+
+services:
+  app:
+    secrets:
+      - db_password
+      - turn_shared_secret
+      - turn_password
+    environment:
+      - TURN_ALLOW_GUESTS
+      - TURN_ENABLED
+      - TURN_URI
+      - TURN_USERNAME
+
+secrets:
+  turn_shared_secret:
+    external: true
+    name: ${STACK_NAME}_turn_shared_secret_${SECRET_TURN_SHARED_SECRET_VERSION}
+  turn_password:
+    external: true
+    name: ${STACK_NAME}_turn_password_${SECRET_TURN_PASSWORD_VERSION}

homeserver.yaml.tmpl

@@ -1122,25 +1122,26 @@ oembed:
 #recaptcha_siteverify_api: "https://my.recaptcha.site"
 
 
+{{ if eq (env "TURN_ENABLED") "1" }}
 ## TURN ##
 
 # The public URIs of the TURN server to give to clients
 #
-#turn_uris: []
+turn_uris: ["{{ env "TURN_URI" }}"]
 
 # The shared secret used to compute passwords for the TURN server
 #
-#turn_shared_secret: "YOUR_SHARED_SECRET"
+turn_shared_secret: "{{ secret "turn_shared_secret" }}"
 
 # The Username and password if the TURN server needs them and
 # does not use a token
 #
-#turn_username: "TURNSERVER_USERNAME"
-#turn_password: "TURNSERVER_PASSWORD"
+turn_username: "{{ env "TURN_USERNAME" }}"
+turn_password: "{{ secret "turn_password" }}"
 
 # How long generated TURN credentials last
 #
-#turn_user_lifetime: 1h
+turn_user_lifetime: 1h
 
 # Whether guests should be allowed to use the TURN server.
 # This defaults to True, otherwise VoIP will be unreliable for guests.
@@ -1148,8 +1149,8 @@ oembed:
 # connect to arbitrary endpoints without having first signed up for a
 # valid account (e.g. by passing a CAPTCHA).
 #
-#turn_allow_guests: true
-
+turn_allow_guests: {{ env "TURN_ALLOW_GUESTS" }}
+{{ end }}
 
 ## Registration ##
 #