https://bugzilla.wikimedia.org/show_bug.cgi?id=25226
Summary: Old revisions served with wrong content type
Product: MediaWiki
Version: unspecified
Platform: All
OS/Version: All
Status: NEW
Severity: minor
Priority: Normal
Component: Images and files
AssignedTo: wikibugs-l@lists.wikimedia.org
ReportedBy: c...@tools.wikimedia.de
CC: gpaum...@wikimedia.org, bryan.tongm...@gmail.com
The older file revisions of [[en:File:21st_World_Scout_Jamboree.svg]] are PNG
images, the newest revision is an SVG. When I click on the older revisions, I
get an XML parsing error in my browser. This made me suspect a bad
content-type, which I confirmed (see below).
Apparently, the backend needs to check the file type explicitly for old
revisions, not using the file extension or the stored type of the newest
revision. Presumably the file type could be cached so that it is only checked
once per image.
Trimmed output:
$ wget -S
'http://upload.wikimedia.org/wikipedia/en/archive/b/b9/20091220134945!21st_World_Scout_Jamboree.svg'
HTTP/1.0 200 OK
Server: Sun-Java-System-Web-Server/7.0
Date: Mon, 20 Sep 2010 11:27:26 GMT
Content-Type: image/svg+xml
Last-Modified: Tue, 08 Dec 2009 22:22:29 GMT
Length: 71991 (70K) [image/svg+xml]
$ file 20091220134945\!21st_World_Scout_Jamboree.svg
20091220134945!21st_World_Scout_Jamboree.svg: PNG image, 300 x 300, 8-bit/color
RGBA, non-interlaced
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