From 0db3c11ab0eb7ba8fa5d4e92074a80fcac5b800b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mike=20F=C3=A4hrmann?= <mike_faehrmann@web.de>
Date: Sat, 7 Sep 2024 20:16:06 +0200
Subject: [PATCH] [common] use 'cf-mitigated' header to detect challenges

---
 gallery_dl/extractor/common.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gallery_dl/extractor/common.py b/gallery_dl/extractor/common.py
index df705710..70e0757a 100644
--- a/gallery_dl/extractor/common.py
+++ b/gallery_dl/extractor/common.py
@@ -196,6 +196,10 @@ class Extractor():
                 server = response.headers.get("Server")
                 if server and server.startswith("cloudflare") and \
                         code in (403, 503):
+                    mitigated = response.headers.get("cf-mitigated")
+                    if mitigated and mitigated.lower() == "challenge":
+                        self.log.warning("Cloudflare challenge")
+                        break
                     content = response.content
                     if b"_cf_chl_opt" in content or b"jschl-answer" in content:
                         self.log.warning("Cloudflare challenge")