From 67c8d01533d8820fe93e11a6fe37447f732690c2 Mon Sep 17 00:00:00 2001
From: Dicken <dicken@noreply.localhost>
Date: Thu, 28 May 2026 00:23:38 +0200
Subject: [PATCH] Dateien nach "backend/src" hochladen

---
 backend/src/db.js    | 44 +++++++++++++++++++++++++++++++++-----------
 backend/src/index.js | 23 +++++++++++++++++++++++
 2 files changed, 56 insertions(+), 11 deletions(-)

diff --git a/backend/src/db.js b/backend/src/db.js
index 849c87c..3098b88 100644
--- a/backend/src/db.js
+++ b/backend/src/db.js
@@ -182,15 +182,13 @@ db.exec("UPDATE order_items SET qty_warteliste=stueckzahl WHERE qty_warteliste=0
 if (!db.prepare("SELECT name FROM sqlite_master WHERE type='table' AND name='messages'").get()) {
   db.exec(`
     CREATE TABLE messages (
-      id                  INTEGER PRIMARY KEY AUTOINCREMENT,
-      sender_id           INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
-      recipient_id        INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
-      encrypted_content   TEXT NOT NULL,
-      iv                  TEXT NOT NULL,
-      created_at          DATETIME DEFAULT CURRENT_TIMESTAMP,
-      deleted_by_sender   INTEGER NOT NULL DEFAULT 0,
-      deleted_by_recipient INTEGER NOT NULL DEFAULT 0,
-      read_by_recipient   INTEGER NOT NULL DEFAULT 0
+      id                INTEGER PRIMARY KEY AUTOINCREMENT,
+      sender_id         INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+      recipient_id      INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+      encrypted_content TEXT NOT NULL,
+      iv                TEXT NOT NULL,
+      created_at        DATETIME DEFAULT CURRENT_TIMESTAMP,
+      read_by_recipient INTEGER NOT NULL DEFAULT 0
     )
   `);
 }
@@ -212,9 +210,33 @@ if (!db.prepare("SELECT name FROM sqlite_master WHERE type='table' AND name='pus
     )
   `);
 }
-// Falls messages-Tabelle alt ist und read_by_recipient fehlt
+// Migration: Soft-Delete-Spalten entfernen (nur Nachrichten übernehmen die noch sichtbar waren)
 const msgCols = db.prepare("PRAGMA table_info(messages)").all().map(r => r.name);
-if (msgCols.length && !msgCols.includes('read_by_recipient'))
+if (msgCols.includes('deleted_by_sender')) {
+  db.exec(`
+    CREATE TABLE messages_v2 (
+      id                INTEGER PRIMARY KEY AUTOINCREMENT,
+      sender_id         INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+      recipient_id      INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+      encrypted_content TEXT NOT NULL,
+      iv                TEXT NOT NULL,
+      created_at        DATETIME DEFAULT NULL,
+      read_by_recipient INTEGER NOT NULL DEFAULT 0
+    );
+    INSERT INTO messages_v2 (id, sender_id, recipient_id, encrypted_content, iv, created_at, read_by_recipient)
+      SELECT id, sender_id, recipient_id, encrypted_content, iv, created_at,
+             COALESCE(read_by_recipient, 0)
+      FROM messages
+      WHERE deleted_by_sender = 0 AND deleted_by_recipient = 0;
+    DROP TABLE messages;
+    ALTER TABLE messages_v2 RENAME TO messages;
+  `);
+  console.log('✅ Migration: messages → Hard-Delete (Soft-Delete-Spalten entfernt)');
+}
+// Falls read_by_recipient noch fehlt (sehr alte Installation)
+const msgCols2 = db.prepare("PRAGMA table_info(messages)").all().map(r => r.name);
+if (msgCols2.length && !msgCols2.includes('read_by_recipient')) {
   db.exec("ALTER TABLE messages ADD COLUMN read_by_recipient INTEGER NOT NULL DEFAULT 0");
+}
 
 module.exports = db;
diff --git a/backend/src/index.js b/backend/src/index.js
index 1b1beb0..24f8ded 100644
--- a/backend/src/index.js
+++ b/backend/src/index.js
@@ -7,6 +7,29 @@ require('./db');
 const app = express();
 app.use(express.json());
 
+// ── Security Headers ──────────────────────────────────────────────────────────
+app.use((_req, res, next) => {
+  res.setHeader('Content-Security-Policy', [
+    "default-src 'self'",
+    "script-src 'self'",
+    // unsafe-inline nötig für React inline-styles + @import Google Fonts
+    "style-src 'self' 'unsafe-inline' https://fonts.googleapis.com",
+    "font-src 'self' https://fonts.gstatic.com",
+    // iCal-Feeds werden serverseitig geprosxt → nur 'self' nötig
+    "connect-src 'self'",
+    // data: für Avatare (base64), google.com für Favicons im QuickLinks-Widget
+    "img-src 'self' data: https://www.google.com",
+    "worker-src 'self'",
+    "object-src 'none'",
+    "base-uri 'self'",
+    "form-action 'self'",
+  ].join('; '));
+  res.setHeader('X-Content-Type-Options', 'nosniff');
+  res.setHeader('X-Frame-Options', 'DENY');
+  res.setHeader('Referrer-Policy', 'strict-origin-when-cross-origin');
+  next();
+});
+
 // ── API ───────────────────────────────────────────────────────────────────────
 app.use('/api/auth',      require('./routes/auth'));
 app.use('/api/admin',     require('./routes/admin'));