Allow mediagoblin registrations to be disabled

src/freedombone-app-mediagoblin

@@ -45,6 +45,7 @@ mediagoblin_variables=(ONION_ONLY
                        MY_USERNAME
                        MEDIAGOBLIN_DOMAIN_NAME
                        MEDIAGOBLIN_CODE
+                       DEFAULT_DOMAIN_NAME
                        DDNS_PROVIDER)
 
 function install_interactive_mediagoblin {
@@ -58,6 +59,27 @@ function install_interactive_mediagoblin {
     APP_INSTALLED=1
 }
 
+function configure_interactive_mediagoblin {
+    read_config_param 'MEDIAGOBLIN_DOMAIN_NAME'
+    MEDIAGOBLIN_BASE_DIR=/var/www/$MEDIAGOBLIN_DOMAIN_NAME/htdocs
+
+    dialog --title $"Mediagoblin" \
+           --backtitle $"Freedombone Control Panel" \
+           --defaultno \
+           --yesno $"\nAllow registration of new users?" 10 60
+    sel=$?
+    case $sel in
+        0)
+            sed -i 's|allow_registration.*|allow_registration = true|g' $MEDIAGOBLIN_BASE_DIR/mediagoblin/mediagoblin.ini
+            ;;
+        1)
+            sed -i 's|allow_registration.*|allow_registration = false|g' $MEDIAGOBLIN_BASE_DIR/mediagoblin/mediagoblin.ini
+            ;;
+        255) return;;
+    esac
+    systemctl restart mediagoblin
+}
+
 function change_password_mediagoblin {
     curr_username="$1"
     new_user_password="$2"