v1.0.22

src/lib/server/docker-validation.ts

@@ -0,0 +1,20 @@
+import { json } from '@sveltejs/kit';
+
+/**
+ * Checks if a value contains path traversal or injection characters.
+ * Rejects: .., /, \, null bytes, % (catches double-encoding).
+ */
+function containsPathTraversal(value: string): boolean {
+	return value.includes('..') || value.includes('/') || value.includes('\\') || value.includes('\0') || value.includes('%');
+}
+
+/**
+ * Validates a Docker resource ID/name from URL params.
+ * Returns a 400 Response if invalid, null if valid.
+ */
+export function validateDockerIdParam(id: string, resourceType = 'resource'): Response | null {
+	if (!id || containsPathTraversal(id)) {
+		return json({ error: `Invalid ${resourceType} ID` }, { status: 400 });
+	}
+	return null;
+}