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-rw-r--r--gallery_dl/extractor/seiga.py6
1 files changed, 5 insertions, 1 deletions
diff --git a/gallery_dl/extractor/seiga.py b/gallery_dl/extractor/seiga.py
index 22c9487..7b8d2a3 100644
--- a/gallery_dl/extractor/seiga.py
+++ b/gallery_dl/extractor/seiga.py
@@ -44,7 +44,11 @@ class SeigaExtractor(Extractor):
url = "{}/image/source/{}".format(self.root, image_id)
response = self.request(
url, method="HEAD", allow_redirects=False, notfound="image")
- return response.headers["Location"].replace("/o/", "/priv/", 1)
+ location = response.headers["location"]
+ if "nicovideo.jp/login" in location:
+ raise exception.StopExtraction(
+ "HTTP redirect to login page (%s)", location.partition("?")[0])
+ return location.replace("/o/", "/priv/", 1)
class SeigaUserExtractor(SeigaExtractor):