Fix #4692, #4856 - stick with auto for scheme in db, change it to $scheme when rendering

backend/internal/nginx.js

@@ -216,6 +216,11 @@ const internalNginx = {
 				}
 			}
 
+			// For redirection hosts, if the scheme is not http or https, set it to $scheme
+			if (nice_host_type === "redirection_host" && ['http', 'https'].indexOf(host.forward_scheme.toLowerCase()) === -1) {
+				host.forward_scheme = "$scheme";
+			}
+
 			if (host.locations) {
 				//logger.info ('host.locations = ' + JSON.stringify(host.locations, null, 2));
 				origLocations = [].concat(host.locations);

backend/migrations/20251111090000_redirect_auto_scheme.js

@@ -0,0 +1,50 @@
+import { migrate as logger } from "../logger.js";
+
+const migrateName = "redirect_auto_scheme";
+
+/**
+ * Migrate
+ *
+ * @see http://knexjs.org/#Schema
+ *
+ * @param   {Object} knex
+ * @returns {Promise}
+ */
+const up = (knex) => {
+	logger.info(`[${migrateName}] Migrating Up...`);
+
+	return knex.schema
+		.table("redirection_host", async (table) => {
+			// change the column default from $scheme to auto
+			await table.string("forward_scheme").notNull().defaultTo("auto").alter();
+			await knex('redirection_host')
+				.where('forward_scheme', '$scheme')
+				.update({ forward_scheme: 'auto' });
+		})
+		.then(() => {
+			logger.info(`[${migrateName}] redirection_host Table altered`);
+		});
+};
+
+/**
+ * Undo Migrate
+ *
+ * @param   {Object} knex
+ * @returns {Promise}
+ */
+const down = (knex) => {
+	logger.info(`[${migrateName}] Migrating Down...`);
+
+	return knex.schema
+		.table("redirection_host", async (table) => {
+			await table.string("forward_scheme").notNull().defaultTo("$scheme").alter();
+			await knex('redirection_host')
+				.where('forward_scheme', 'auto')
+				.update({ forward_scheme: '$scheme' });
+		})
+		.then(() => {
+			logger.info(`[${migrateName}] redirection_host Table altered`);
+		});
+};
+
+export { up, down };

frontend/src/modals/RedirectionHostModal.tsx

@@ -162,7 +162,7 @@ const RedirectionHostModal = EasyModal.create(({ id, visible, remove }: Props) =
 																		required
 																		{...field}
 																	>
-																		<option value="$scheme">Auto</option>
+																		<option value="auto">Auto</option>
 																		<option value="http">http</option>
 																		<option value="https">https</option>
 																	</select>