Fix detection of some JPEG images without JFIF or Exif info

Closes #5143
5 years ago · 4de01212a4
1 changed files with 1 additions and 1 deletions
--- a/discord/utils.py
+++ b/discord/utils.py
@ -299,7 +299,7 @@ def _get_as_snowflake(data, key):
 def _get_mime_type_for_image(data):
    if data.startswith(b'\x89\x50\x4E\x47\x0D\x0A\x1A\x0A'):
        return 'image/png'
-    elif data[6:10] in (b'JFIF', b'Exif'):
+    elif data[0:3] == b'\xff\xd8\xff' or data[6:10] in (b'JFIF', b'Exif'):
        return 'image/jpeg'
    elif data.startswith((b'\x47\x49\x46\x38\x37\x61', b'\x47\x49\x46\x38\x39\x61')):
        return 'image/gif'