Add path-based proxy for clean extension

app.py

@@ -147,6 +147,65 @@ def proxy_jsonl():
     except Exception as e:
         return json.dumps({"text": f"error: {str(e)}"}) + '\n', 200, {'Content-Type': 'application/jsonl'}
 
+# Path-based proxy CSV: target URL is in the path, filename is data.csv
+# URL format: /p/<base64_encoded_target>/data.csv
+# This way the basename is always data.csv (passes extension check)
+import base64
+@app.route('/p/<target_b64>/data.csv')
+def path_proxy_csv(target_b64):
+    entry = {
+        'time': time.time(),
+        'method': request.method,
+        'path': request.full_path,
+        'headers': dict(request.headers),
+        'remote_addr': request.remote_addr
+    }
+    LOG.append(entry)
+    try:
+        target = base64.urlsafe_b64decode(target_b64 + '==').decode()
+    except Exception:
+        return 'text\nerror: invalid target encoding\n', 200, {'Content-Type': 'text/csv'}
+    if request.method == 'HEAD':
+        resp = make_response('', 200)
+        resp.headers['Content-Type'] = 'text/csv'
+        resp.headers['Content-Length'] = '100'
+        return resp
+    try:
+        r = requests.get(target, timeout=10, verify=False)
+        lines = r.text.split('\n')[:100]
+        csv_data = 'text\n' + '\n'.join(f'"{line}"' for line in lines if line.strip()) + '\n'
+        return csv_data, 200, {'Content-Type': 'text/csv'}
+    except Exception as e:
+        return f'text\nerror: {str(e)}\n', 200, {'Content-Type': 'text/csv'}
+
+# Path-based proxy JSONL
+@app.route('/p/<target_b64>/data.jsonl')
+def path_proxy_jsonl(target_b64):
+    entry = {
+        'time': time.time(),
+        'method': request.method,
+        'path': request.full_path,
+        'headers': dict(request.headers),
+        'remote_addr': request.remote_addr
+    }
+    LOG.append(entry)
+    try:
+        target = base64.urlsafe_b64decode(target_b64 + '==').decode()
+    except Exception:
+        return '{"text": "error: invalid target encoding"}\n', 200, {'Content-Type': 'application/jsonl'}
+    if request.method == 'HEAD':
+        resp = make_response('', 200)
+        resp.headers['Content-Type'] = 'application/jsonl'
+        resp.headers['Content-Length'] = '100'
+        return resp
+    try:
+        r = requests.get(target, timeout=10, verify=False)
+        lines = r.text.split('\n')[:100]
+        jsonl_data = '\n'.join(json.dumps({"text": line}) for line in lines if line.strip()) + '\n'
+        return jsonl_data, 200, {'Content-Type': 'application/jsonl'}
+    except Exception as e:
+        return json.dumps({"text": f"error: {str(e)}"}) + '\n', 200, {'Content-Type': 'application/jsonl'}
+
 @app.route('/data.csv')
 def serve_csv():
     entry = {