From bab613ea922819850714a2dcc53bd8ad9f7af413 Mon Sep 17 00:00:00 2001
From: RichardG867 <richardg867@gmail.com>
Date: Sat, 23 Nov 2024 10:38:28 -0300
Subject: [PATCH] ImageExtractor: Make BMP detection stricter to reduce attempt
 time

---
 biostools/extractors.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/biostools/extractors.py b/biostools/extractors.py
index f24a976..8df4141 100644
--- a/biostools/extractors.py
+++ b/biostools/extractors.py
@@ -891,9 +891,9 @@ class ImageExtractor(Extractor):
 		# Header pattern for common format images.
 		self._pil_pattern = re.compile(
 			b'''\\x0A[\\x00-\\x05][\\x00-\\x01][\\x01\\x02\\x04\\x08]|''' # PCX
-			b'''BM|''' # BMP
+			b'''BM[\\x00-\\xFF]{3}\\x00[\\x00-\\xFF]{7}\\x00|''' # BMP (limited to 16 MB size and start offset)
 			b'''\\xFF\\xD8\\xFF|''' # JPEG
-			b'''GIF8|''' # GIF
+			b'''GIF8[79]a|''' # GIF
 			b'''\\x89PNG''' # PNG
 		)