From 049a0dc351db6a16c20cc23e8d63303e49b38bad Mon Sep 17 00:00:00 2001
From: rr- <rr-@sakuya.pl>
Date: Thu, 29 Sep 2016 12:58:53 +0200
Subject: [PATCH] server/mime: fix GIF animation heuristics

Closes #100
---
 server/szurubooru/func/mime.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/server/szurubooru/func/mime.py b/server/szurubooru/func/mime.py
index 0f712d1a..2277ed64 100644
--- a/server/szurubooru/func/mime.py
+++ b/server/szurubooru/func/mime.py
@@ -52,5 +52,6 @@ def is_image(mime_type):
 
 
 def is_animated_gif(content):
+    pattern = b'\x21\xF9\x04[\x00-\xFF]{4}\x00[\x2C\x21]'
     return get_mime_type(content) == 'image/gif' \
-        and len(re.findall(b'\x21\xF9\x04.{4}\x00[\x2C\x21]', content)) > 1
+        and len(re.findall(pattern, content)) > 1