[MPlayer-users] Playing an URL with special characters, charset problem

[Raimund Steger]

Ah OK, well given that it is not much of a problem in practice, it can
probably stay like that anyway.

Raimund

> On Tue, Jan 11, 2011 at 01:49:39AM +0100, Raimund Steger wrote:
>> upon trying to reproduce this out of interest I notice that mplayer
>> *does* seem to urldecode the requestUri before writing it to the
>> HTTP request. I can confirm this with tcpdump as well as by checking
>> Apache's access.log of the machine I run it against.
>>
>> E. g. when testing it like so:
>>
>> mplayer 'http://steg0.eu/testing/x%E4/pie.mp4'
>>
>> access.log reads:
>>
>>
>> 87.184.161.204 - - [11/Jan/2011:00:03:52 +0000] "GET
>> /testing/x\xe4/pie.mp4 HTTP/1.0" 200 44841240 "-" "MPlayer
>> SVN-r32760-4.5.2"
>>
>>
>> While this might not be a great problem with current Web servers,
>> AFAIK requestUris should be 7-bit, hence urlencoding. (RFC3986:
>> "Once produced, a URI is always in its percent-encoded form.")
>> This is how Firefox issues the request:
>>
>>
>> 2a01:170:1046:0:221:28ff:fe14:b097 - - [10/Jan/2011:23:59:37 +0000]
>> "GET /testing/x%E4/pie.mp4 HTTP/1.1" 404 319 "-" "Mozilla/5.0 (X11;
>> U; SunOS i86pc; en-US; rv:1.9.2.6) Gecko/20100627 Firefox/3.6.6"
>>
>>
>> (Firefox connects through IPv6 while mplayer falls back to IPv4,
>> this is unrelated.)
>>
>> I understand that things like extracting passwords out of URIs
>> require parts to be decoded, but the current implementation seems to
>> go a little overboard...
>
> First, unescaping is done first so that URLs written in both escaped
> and unescaped form are handled the same. Other programs do that as well.
> The real issue is that there's a special check in the URL escaping
> code that skips escaping of values >= 127. Probably based on some
> misunderstanding of the RFC, it is there since the very first
> implementation
> (actually it is also possible that some of the web servers used early on
> in Asia actually didn't handle escaping correctly...).
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R.Steger Tel. +49-179-2981632 icq 16845346