Update

backend/src/index.ts

@@ -27,9 +27,11 @@ const port = Number(process.env.PORT ?? 3000);
 const __dirname = path.dirname(fileURLToPath(import.meta.url));
 const frontendDist = path.resolve(__dirname, "../../frontend/dist");
 const serveFrontend = process.env.SERVE_FRONTEND !== "false";
+const requestBodyLimit = process.env.REQUEST_BODY_LIMIT ?? "250mb";
 
 app.use(cors());
-app.use(express.json({ limit: "50mb" }));
+app.use(express.text({ type: ["text/plain", "text/sql"], limit: requestBodyLimit }));
+app.use(express.json({ limit: requestBodyLimit }));
 
 app.get("/api/health", async (_req, res) => {
   await query("SELECT 1");
@@ -3340,6 +3342,18 @@ app.get("/api/setup/status", async (_req, res) => {
   res.json({ required: !(await hasAdminUser()) });
 });
 
+function restoreSqlFromRequestBody(body: unknown) {
+  if (typeof body === "string") {
+    return requireString(body, "sql");
+  }
+
+  if (isPlainObject(body)) {
+    return requireString(body.sql, "sql");
+  }
+
+  throw badRequest("sql is required");
+}
+
 app.post("/api/setup/admin", async (req, res) => {
   if (await hasAdminUser()) {
     res.status(409).json({ error: "Setup wurde bereits abgeschlossen" });
@@ -3390,7 +3404,7 @@ app.post("/api/setup/restore", async (req, res) => {
     return;
   }
 
-  const sql = requireString(req.body.sql, "sql");
+  const sql = restoreSqlFromRequestBody(req.body);
   const result = await restoreTicketTrackerBackup(sql);
   res.status(201).json(result);
 });
@@ -3401,7 +3415,7 @@ app.post("/api/setup/restore/validate", async (req, res) => {
     return;
   }
 
-  const sql = requireString(req.body.sql, "sql");
+  const sql = restoreSqlFromRequestBody(req.body);
   res.json(await validateTicketTrackerBackup(sql));
 });
 
@@ -4157,12 +4171,12 @@ app.get("/api/admin/export/database", requireAdmin, async (_req, res) => {
 });
 
 app.post("/api/admin/restore/database/validate", requireAdmin, async (req, res) => {
-  const sql = requireString(req.body.sql, "sql");
+  const sql = restoreSqlFromRequestBody(req.body);
   res.json(await validateTicketTrackerBackup(sql));
 });
 
 app.post("/api/admin/restore/database", requireAdmin, async (req, res) => {
-  const sql = requireString(req.body.sql, "sql");
+  const sql = restoreSqlFromRequestBody(req.body);
   const result = await restoreTicketTrackerBackup(sql);
 
   res.clearCookie("tickettracker_session", {
@@ -7781,10 +7795,19 @@ if (serveFrontend) {
   });
 }
 
-app.use((error: Error & { status?: number }, _req: express.Request, res: express.Response, _next: express.NextFunction) => {
+app.use((error: Error & { status?: number; statusCode?: number; type?: string }, _req: express.Request, res: express.Response, _next: express.NextFunction) => {
   console.error(error);
-  res.status(error.status ?? 500).json({
-    error: error.status ? error.message : "Internal server error"
+
+  if (error.type === "entity.too.large" || error.status === 413 || error.statusCode === 413) {
+    res.status(413).json({
+      error: `Upload ist zu groß. Aktuelles Limit: ${requestBodyLimit}.`
+    });
+    return;
+  }
+
+  const status = error.status ?? error.statusCode ?? 500;
+  res.status(status).json({
+    error: status < 500 ? error.message : "Internal server error"
   });
 });
 

frontend/src/api.ts

@@ -140,6 +140,10 @@ async function request<T>(url: string, options: ApiRequestInit = {}): Promise<T>
       throw new ApiError("Anfrage hat zu lange gedauert", 408);
     }
 
+    if (error instanceof TypeError) {
+      throw new ApiError("Verbindung zum Server wurde unterbrochen. Bitte prüfen, ob Backend und Frontend laufen und ob das Backup kleiner als das Upload-Limit ist.", 503);
+    }
+
     throw error;
   } finally {
     if (timeout) {
@@ -223,14 +227,18 @@ export function createSetupAdmin(payload: { username: string; displayName: strin
 export function restoreSetupBackup(sql: string) {
   return request<{ ok: boolean }>("/api/setup/restore", {
     method: "POST",
-    body: JSON.stringify({ sql })
+    timeoutMs: 10 * 60 * 1000,
+    headers: { "Content-Type": "text/plain; charset=utf-8" },
+    body: sql
   });
 }
 
 export function validateSetupBackup(sql: string) {
   return request<RestoreValidationResult>("/api/setup/restore/validate", {
     method: "POST",
-    body: JSON.stringify({ sql })
+    timeoutMs: 10 * 60 * 1000,
+    headers: { "Content-Type": "text/plain; charset=utf-8" },
+    body: sql
   });
 }
 
@@ -287,14 +295,18 @@ export async function downloadDatabaseExport() {
 export function restoreDatabaseBackup(sql: string) {
   return request<{ ok: boolean }>("/api/admin/restore/database", {
     method: "POST",
-    body: JSON.stringify({ sql })
+    timeoutMs: 10 * 60 * 1000,
+    headers: { "Content-Type": "text/plain; charset=utf-8" },
+    body: sql
   });
 }
 
 export function validateDatabaseBackup(sql: string) {
   return request<RestoreValidationResult>("/api/admin/restore/database/validate", {
     method: "POST",
-    body: JSON.stringify({ sql })
+    timeoutMs: 10 * 60 * 1000,
+    headers: { "Content-Type": "text/plain; charset=utf-8" },
+    body: sql
   });
 }