feat: overhaul public landing page and backup tooling

2025-09-19 16:07:43 +02:00
parent ad9c6d63d3
commit 2a4d38813f
72 changed files with 4332 additions and 1466 deletions
@@ -0,0 +1,32 @@
+function sanitizeCss(css) {
+  if (!css || typeof css !== 'string') {
+    return '';
+  }
+
+  let sanitized = css;
+
+  const disallowedPatterns = [
+    /@import[^;]+;?/gi,
+    /@charset[^;]+;?/gi,
+    /expression\s*\([^)]*\)/gi,
+    /url\s*\(\s*(['"])\s*javascript:[^)]*\)/gi,
+    /url\s*\(\s*(['"])\s*data:text\/javascript[^)]*\)/gi
+  ];
+
+  disallowedPatterns.forEach((pattern) => {
+    sanitized = sanitized.replace(pattern, '');
+  });
+
+  sanitized = sanitized.replace(/[\u0000-\u001F\u007F]/g, '');
+
+  const MAX_LENGTH = 100 * 1024;
+  if (sanitized.length > MAX_LENGTH) {
+    sanitized = sanitized.slice(0, MAX_LENGTH);
+  }
+
+  return sanitized.trim();
+}
+
+module.exports = {
+  sanitizeCss,
+};