Problem with filename encoding

[Igor Sysoev]

On Tue, Nov 13, 2012 at 10:22:53AM +0100, Nilshar wrote:
> On 13 November 2012 10:01, Igor Sysoev <igor at sysoev.ru> wrote:
> 
> > On Nov 13, 2012, at 12:41 , Nilshar wrote:
> >
> > On 13 November 2012 09:38, Igor Sysoev <igor at sysoev.ru> wrote:
> >
> >> On Nov 13, 2012, at 12:32 , Nilshar wrote:
> >>
> >> Hello list,
> >>
> >> I got an issue with a filename containing "strange" characters.
> >> It seems that nginx is not able to url_decode correctly, and then get the
> >> right file.
> >>
> >> Yes, the filename is ugly : "Capture d’écran 2010-09-25 à 08.30.07.png"
> >> but apache is able to read it, and nginx is not :
> >>
> >> nginx strace :
> >> open("/<path>/images/Capture%20d%E2%80%99%C3%A9cran%202010-09-25%20%C3%A0%2008.30.07.png",
> >> O_RDONLY|O_NONBLOCK) = -1 ENOENT (No such file or directory)
> >>
> >> apache strace :
> >> open("/<path>/images/Capture d\342\200\231\303\251cran 2010-09-25
> >> \303\240 08.30.07.png", O_RDONLY|O_CLOEXEC) = 100
> >>
> >> So it seems that nginx is using the url_encoded version of the filename,
> >> while apache do it's own thing on it.
> >>
> >> On both apache and nginx, the access log says : "GET
> >> /images/Capture%20d%E2%80%99%C3%A9cran%202010-09-25%20%C3%A0%2008.30.07.png"
> >>
> >> both server have the same locales settings, and I tried different charset
> >> configuration into nginx, but no luck..
> >>
> >> Any idea how I can fix that without changing the filename (sadly, it's
> >> not possible :/) ?
> >>
> >>
> >> The most probably there is a rewrite in configuration which changes URI
> >> to $request_uri.
> >> nginx escapes URI if no one interferes.
> >>
> >>
> > Yes indeed, there is a rewrite !
> > got a tip on how to fix that ?
> >
> >
> > The general rule is to not use rewrites at all: they make configuration to
> > a mess.
> 
> Hum... well ok, if I read it right, it is recommanded to use try_files
> instead right ?
> Problem is that it seems that try_files is not allowed inside a "if"...
> 
> Well.. maybe someone will be able to point me a better conf, here what I'm
> trying to do :
> 
>         location ~ ^/(media|files|list|album|images)/ {
>                 root /;
>                 if ($host ~* "^(.)(.)(.*)\.example.com$") {
>                         set $dir1 $1;
>                         set $dir2 $2;
>                         set $dir3 $3;
>                         rewrite ^ /<path>/
> www.example.com/$dir1/$dir2/$dir1$dir2$dir3$request_uri? break;
>                 }
>         }
> 
> So I should be able to remove the if so try_files might be happy, but I do
> not know how to set the 3 dir w/o the if statement..
> I tried several things, so far no luck.

server {
    server_name ~^(?<dir1>.)(?<dir2>.)(?<dir3>.*)\.example\.com$;

    root /path/www.example.com/$dir1/$dir2/$dir1$dir2$dir3;

    location /media/  { }
    location /files/  { }
    location /list/   { }
    location /album/  { }
    location /images/ { }

    location / { return 404; }
}


-- 
Igor Sysoev
http://nginx.com/support.html