[pixiv] fix 'IndexError' for unviewable works (#7940)

gallery_dl/extractor/pixiv.py

@@ -308,7 +308,12 @@ class PixivExtractor(Extractor):
             square1200 = body["userIllusts"][body["id"]]["url"]
         except Exception:
             return
+
         parts = square1200.rpartition("_p0")[0].split("/")
+        if len(parts) < 6:
+            return self.log.warning(
+                "%s: %s", body["id"], square1200.rpartition("/")[2])
+
         del parts[3:5]
         parts[3] = "img-original"
         base = "/".join(parts)

test/results/pixiv.py

@@ -368,6 +368,13 @@ __tests__ = (
     "#sha1_content": "aa119c27fec0a36bbd06e7491987acf5f1be6293",
 },
 
+{
+    "#url"     : "https://www.pixiv.net/artworks/56360615",
+    "#comment" : "limit_unviewable_s / unavailable without cookies (#7940)",
+    "#class"   : pixiv.PixivWorkExtractor,
+    "#count"   : 11,
+},
+
 {
     "#url"     : "https://www.pixiv.net/en/artworks/966412",
     "#class"   : pixiv.PixivWorkExtractor,