updated style

src/routes/pastes.js

@@ -44,6 +44,29 @@ function parseExpiryOption(expiresIn) {
   return new Date(Date.now() + ms).toISOString();
 }
 
+function normalizeClientIp(ip) {
+  if (typeof ip !== 'string' || ip.length === 0) {
+    return 'unknown';
+  }
+
+  let normalized = ip.trim();
+  if (normalized.startsWith('::ffff:')) {
+    normalized = normalized.slice(7);
+  }
+
+  return normalized.replace(/[^0-9a-fA-F:.]/g, '').slice(0, 64) || 'unknown';
+}
+
+async function setPasteTags(id, tags) {
+  if (typeof client.setObjectTagging === 'function') {
+    await client.setObjectTagging(BUCKET, id, tags);
+    return;
+  }
+  if (typeof client.putObjectTagging === 'function') {
+    await client.putObjectTagging(BUCKET, id, tags);
+  }
+}
+
 function getExpiryFromMeta(metaData) {
   return (
     metaData['x-amz-meta-expires-at'] ||
@@ -99,6 +122,7 @@ router.post('/', wrap(async (req, res) => {
 
   const id  = generateId();
   const buf = Buffer.from(content, 'utf8');
+  const clientIp = normalizeClientIp(req.ip);
 
   const meta = { 'Content-Type': 'text/plain; charset=utf-8' };
   if (typeof lang === 'string' && lang.length > 0) {
@@ -116,6 +140,7 @@ router.post('/', wrap(async (req, res) => {
   }
 
   await client.putObject(BUCKET, id, buf, buf.length, meta);
+  await setPasteTags(id, { client_ip: clientIp });
   res.status(201).json({ id, url: `/p/${id}`, expiresAt });
 }));