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Corrupt filename when posting to a newsgroup
Content-Disposition: attachment; filename="no profit.jpg"Content-Type: image/jpeg; name==??Q?no=20profit.jpg?=
Content-Transfer-Encoding: Base64
What on earth happened here?
Opera could read the resultant post, but someone using an inferior newsreader (Xnews) could not. It stupidly read the corrupt name instead of the good one.
16 parrots and reproducing fast!
http://www.petersparrots.com
http://www.petersparrots.com
Originally posted by hucker:
Content-Type: image/jpeg; name==??Q?no=20profit.jpg?=
Opera does some tricks like Thunderbird to make it so Outlook users don't see corrupted filenames when a filename is really long and or contains non-ascii characters.
The problem is that Opera didn't copy Thunderbird's behavior correctly and enables the trick even for simple filenames like "no profile.jpg". This causes some crappy clients (like Lotus) to get confused.
The reason most clients don't have a problem with it is they use filename= in the content-disposition header or they understand quoted-printable in name= in the content-type header.
I've been trying to get the bug fixed for a while now, but no luck.
Looks more like Xnews's fault to me.
16 parrots and reproducing fast!
http://www.petersparrots.com
http://www.petersparrots.com
Originally posted by hucker:
Looks more like Xnews's fault to me.
It is. But, if Opera's behavior was like Thunderbird's, it'd work. The bug is DSK-350183 btw.
Explain what the exact difference is between Opera's behaviour and Thunderbird's if you can please.
16 parrots and reproducing fast!
http://www.petersparrots.com
http://www.petersparrots.com
Originally posted by hucker:
Content-Type: image/jpeg; name==??Q?no=20profit.jpg?=
Thunderbird would do:
Content-Type: image/jpeg; name="no profit.jpg"
Yes, but I meant when DOES Thunderbird use the "trick" and doesn't that impede crappy newsreaders too?
16 parrots and reproducing fast!
http://www.petersparrots.com
http://www.petersparrots.com
Example:
"√Fee App - Final Order.doc":
Thunderbird and Opera do this:
(Only Opera uses the correct application/msword mime type and doesn't quote the name value (as it's not really needed when it's encoded)).
, which most crappy clients seem to have no trouble with, and it makes Outlook and Outlook Express happy (they don't support RFC2231). Can't vouch for xnews though.
It's just the case where the filename doesn't have an non-ascii characters in it that Opera encodes it. But, it's not so much that Opera encodes it in that situation, it's that it uses quoted-printable instead of base64 (note the 'B' v.s. the 'Q').
"√Fee App - Final Order.doc":
Thunderbird and Opera do this:
Content-Type: text/plain; name="=?UTF-8?B?4oiaRmVlIEFwcCAtIEZpbmFsIE9yZGVyLmRvYw==?="
(Only Opera uses the correct application/msword mime type and doesn't quote the name value (as it's not really needed when it's encoded)).
, which most crappy clients seem to have no trouble with, and it makes Outlook and Outlook Express happy (they don't support RFC2231). Can't vouch for xnews though.
It's just the case where the filename doesn't have an non-ascii characters in it that Opera encodes it. But, it's not so much that Opera encodes it in that situation, it's that it uses quoted-printable instead of base64 (note the 'B' v.s. the 'Q').
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