feat: complete remediation phase 3

backend/config/config.go

@@ -1,6 +1,7 @@
 package config
 
 import (
+	"log"
 	"os"
 	"strconv"
 )
@@ -49,6 +50,11 @@ func Load() *Config {
 	cfg.VersionsDir = cfg.StorageDir + "/.versions"
 	cfg.BackupDir = cfg.StorageDir + "/.backups"
 
+	if cfg.OnlyOfficeJWT == "" {
+		log.Println("WARNING: ONLYOFFICE_JWT_SECRET not set \u2014 Document Server requests will NOT be authenticated.")
+		log.Println("         Anyone with network access to the Document Server can open/edit documents.")
+	}
+
 	return cfg
 }
 

backend/handlers/files.go

@@ -554,7 +554,7 @@ func (h *FSHandler) Delete(c *fiber.Ctx) error {
 	isPermanent := c.Query("permanent") == "true"
 	if isPermanent {
 		// Ensure we don't delete the root
-		if resolvedPath == c.Locals("resolvedPath").(string) && relativePath == "." {
+		if resolvedPath == h.Config.StorageDir && relativePath == "." {
 			return c.Status(fiber.StatusForbidden).JSON(fiber.Map{"error": "cannot permanently delete root"})
 		}
 		
@@ -592,8 +592,14 @@ func (h *FSHandler) Delete(c *fiber.Ctx) error {
 
 	if err := os.Rename(resolvedPath, trashPath); err != nil {
 		fmt.Printf("Rename error %s -> %s: %v. Attempting copy & delete fallback...\n", resolvedPath, trashPath, err)
+		if isDir == 1 {
+			if err := copyDir(resolvedPath, trashPath); err != nil {
+				return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{"error": "failed to move directory to trash"})
+			}
+		} else {
 			if err := copyFile(resolvedPath, trashPath); err != nil {
-			return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{"error": "failed to move to trash"})
+				return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{"error": "failed to move file to trash"})
+			}
 		}
 		safeRemovePath(h.Config.StorageDir, resolvedPath)
 	}

backend/handlers/sharing.go

@@ -119,13 +119,11 @@ func (h *ShareHandler) ListShares(c *fiber.Ctx) error {
 
 		// Skip expired shares
 		if expiresAt != nil {
-			t, err := time.Parse("2006-01-02 15:04:05-07:00", *expiresAt)
+			t, err := time.Parse(time.RFC3339, *expiresAt)
-			if err == nil && time.Now().After(t) {
+			if err != nil {
-				// To handle different time formats, we could parse it more robustly
+				t, err = time.Parse("2006-01-02 15:04:05", *expiresAt)
-				// but for now, we'll let frontend also check or we just check here.
 			}
-			t2, err2 := time.Parse(time.RFC3339, *expiresAt)
+			if err == nil && time.Now().After(t) {
-			if err2 == nil && time.Now().After(t2) {
 				continue
 			}
 		}

backend/handlers/webdav.go

@@ -21,6 +21,16 @@ import (
 	"golang.org/x/net/webdav"
 )
 
+type statusCapture struct {
+	http.ResponseWriter
+	statusCode int
+}
+
+func (sc *statusCapture) WriteHeader(code int) {
+	sc.statusCode = code
+	sc.ResponseWriter.WriteHeader(code)
+}
+
 type WebDAVHandler struct {
 	Handler *webdav.Handler
 	DB      *database.DB
@@ -117,11 +127,11 @@ func (h *WebDAVHandler) Handle(c *fiber.Ctx) error {
 	// Adapt Fiber's FastHTTP to standard net/http for the WebDAV handler
 	fasthttpadaptor.NewFastHTTPHandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		relPath := strings.TrimPrefix(r.URL.Path, "/webdav")
-		// Native WebDAV handles overwriting automatically
-		h.Handler.ServeHTTP(w, r)
 		
-		// If it was a PUT request, we should sync it with our DB (checksum, size, etc.)
+		capture := &statusCapture{ResponseWriter: w, statusCode: 200}
-		if r.Method == "PUT" && r.Response != nil && r.Response.StatusCode >= 200 && r.Response.StatusCode < 300 {
+		h.Handler.ServeHTTP(capture, r)
+		
+		if r.Method == "PUT" && capture.statusCode >= 200 && capture.statusCode < 300 {
 			h.syncToDB(relPath)
 		}
 	})(c.Context())

backend/main.go

@@ -104,9 +104,14 @@ func main() {
 		return c.Next()
 	})
 	app.Use(helmet.New())
+	app.Use(func(c *fiber.Ctx) error {
+		c.Set("Content-Security-Policy", "default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' 'unsafe-inline'; img-src 'self' data: blob:; connect-src 'self' wss: https: http:;")
+		return c.Next()
+	})
 	allowedOrigins := os.Getenv("ALLOWED_ORIGINS")
 	if allowedOrigins == "" {
-		allowedOrigins = "http://localhost:3000"
+		log.Println("WARNING: ALLOWED_ORIGINS not set \u2014 CORS will reject all cross-origin requests")
+		allowedOrigins = "https://no-origin-configured.invalid"
 	}
 
 	app.Use(cors.New(cors.Config{

backend/middleware/auth.go

@@ -23,9 +23,18 @@ func AuthMiddleware(jwtSecret string) fiber.Handler {
 
 		isQueryToken := false
 		if tokenString == "" {
+			allowedPaths := []string{"/api/onlyoffice/callback", "/api/files/download", "/api/files/thumbnail"}
+			path := c.Path()
+			for _, p := range allowedPaths {
+				if strings.HasPrefix(path, p) {
 					tokenString = c.Query("token")
+					if tokenString != "" {
 						isQueryToken = true
 					}
+					break
+				}
+			}
+		}
 
 		if tokenString == "" {
 			return c.Status(fiber.StatusUnauthorized).JSON(fiber.Map{

frontend/package.json

@@ -6,7 +6,8 @@
     "dev": "next dev",
     "build": "next build",
     "start": "next start",
-    "lint": "next lint"
+    "lint": "next lint",
+    "postinstall": "node -e \"require('fs').copyFileSync('node_modules/pdfjs-dist/build/pdf.worker.min.mjs', 'public/pdf.worker.min.mjs')\""
   },
   "dependencies": {
     "@onlyoffice/document-editor-react": "^2.2.0",

frontend/src/components/PdfViewer.tsx

@@ -7,7 +7,7 @@ import 'react-pdf/dist/Page/AnnotationLayer.css';
 import 'react-pdf/dist/Page/TextLayer.css';
 
 if (typeof window !== 'undefined') {
-  pdfjs.GlobalWorkerOptions.workerSrc = `//unpkg.com/pdfjs-dist@${pdfjs.version}/build/pdf.worker.min.mjs`;
+  pdfjs.GlobalWorkerOptions.workerSrc = `/pdf.worker.min.mjs`;
 }
 
 export default function PdfViewer({ url }: { url: string }) {

frontend/src/components/SettingsPage.tsx

@@ -72,7 +72,14 @@ export default function SettingsPage({ onLogout }: SettingsPageProps) {
     setSuccess(false);
 
     try {
-      await api.updateSettings(settings);
+      const existing = await api.getSettings();
+      const merged = {
+        ...(existing?.settings || existing || {}),
+        theme: settings.theme,
+        grid_size: settings.grid_size,
+        trash_auto_purge_days: settings.trash_auto_purge_days,
+      };
+      await api.updateSettings(merged);
       setSuccess(true);
       setTimeout(() => setSuccess(false), 3000);
       applyTheme(settings.theme);

frontend/src/components/ShareModal.tsx

@@ -85,7 +85,8 @@ export default function ShareModal({ filePath, onClose }: ShareModalProps) {
                     <Shield className="w-4 h-4" /> Password (Optional)
                   </label>
                   <input
-                    type="text"
+                    type="password"
+                    autoComplete="new-password"
                     value={password}
                     onChange={(e) => setPassword(e.target.value)}
                     placeholder="Leave blank for no password"