1 files changed, 24 insertions, 0 deletions
diff --git a/searx/botdetection/http_accept.py b/searx/botdetection/http_accept.py
new file mode 100644
index 000000000..1ab7cb4c1
--- /dev/null
+++ b/searx/botdetection/http_accept.py
@@ -0,0 +1,24 @@
+# SPDX-License-Identifier: AGPL-3.0-or-later
+# lint: pylint
+"""
+Method ``http_accept``
+----------------------
+
+The ``http_accept`` method evaluates a request as the request of a bot if the
+Accept_ header ..
+
+- did not contain ``text/html``
+
+.. _Accept:
+   https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Accept
+
+"""
+
+from typing import Optional, Tuple
+import flask
+
+
+def filter_request(request: flask.Request) -> Optional[Tuple[int, str]]:
+    if 'text/html' not in request.accept_mimetypes:
+        return 429, "bot detected, HTTP header Accept did not contain text/html"
+    return None