naviserver-devel

[naviserver-devel] Following symbolic directory links with NaviServer possible?

[Christian A V. <ca...@ki...>]

Hi all!

I'm wondering if it's a misconfiguration of mine or a feature of
NaviServer:

whenever I want to symbolically link to a folder in "pages" directory,
I run into a 403 ("Forbidden") error.  

Symbolically linking to individual files works fine.
Did I miss a configuration parameter?

Testing configurations were Ubuntu/Debian 8.10 and 9.04 and SuSE
Enterprise 10 (Kernel 2.6.16).


By the way:
I vaguely remember symbolically linking to a mounted CD-ROM in
AOLserver 4 on a SuSE system, some years ago.


--
Regards,
Christian

Re: [naviserver-devel] Following symbolic directory links with NaviServer possible?

[Stephen D. <sd...@gm...>]

On Tue, Sep 22, 2009 at 11:23 AM, Christian A Vogl <ca...@ki...> wrote:
> Hi all!
>
> I'm wondering if it's a misconfiguration of mine or a feature of
> NaviServer:
>
> whenever I want to symbolically link to a folder in "pages" directory,
> I run into a 403 ("Forbidden") error.
>
> Symbolically linking to individual files works fine.
> Did I miss a configuration parameter?


I don't think there's any code in the fastpath (static files) or
adp/tcl path which returns a 403 response.

Maybe you have some code which calls ns_forbidden or
Ns_ConnReturnForbidden? In a filter, or a directory listing proc/adp?

If there is also a file/directory permission error, it should show up
in the error log.

Re: [naviserver-devel] Following symbolic directory links with NaviServer possible?

[Christian A V. <c....@ki...>]

Yes, you're right, Stephen, thank you!

Responsible's my own ns_returnforbidden, and I was misguided by the
different behaviour for files and directories. In detail, for maybe
helping other misguided half-blinds like me:

I checked file access using TCL's "file normalize",
which returns 
   "/path/to/real/file.ext" 
for requests of "/path/to/webserver/pages/symdir/file.ext" in a
symbolically linked directory (symbolic link
   "symdir --> /path/to/real" 
in physical naviserver page root "/path/to/webserver/pages"),

but returns
   "/path/to/webserver/pages/physdir/file.ext" 
if only "file.ext" links symbolically somewhere else (symbolic link
   "file.ext --> /path/to/real/file.ext" 
in physical directory "/path/to/webserver/pages/realdir")


So I just had to drop the normalizing.

Thanks again, Stephen,
and best regards to the list!





On Tue, 22 Sep 2009, Stephen Deasey wrote:

> On Tue, Sep 22, 2009 at 11:23 AM, Christian A Vogl <ca...@ki...> wrote:
> > Hi all!
> >
> > I'm wondering if it's a misconfiguration of mine or a feature of
> > NaviServer:
> >
> > whenever I want to symbolically link to a folder in "pages" directory,
> > I run into a 403 ("Forbidden") error.
> >
> > Symbolically linking to individual files works fine.
> > Did I miss a configuration parameter?
> 
> 
> I don't think there's any code in the fastpath (static files) or
> adp/tcl path which returns a 403 response.
> 
> Maybe you have some code which calls ns_forbidden or
> Ns_ConnReturnForbidden? In a filter, or a directory listing proc/adp?
> 
> If there is also a file/directory permission error, it should show up
> in the error log.
> 
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Re: [naviserver-devel] Following symbolic directory links with NaviServer possible?

[Stephen D. <sd...@gm...>]

On Tue, Sep 22, 2009 at 1:13 PM, Christian A Vogl <c....@ki...> wrote:
> Yes, you're right, Stephen, thank you!
>
> Responsible's my own ns_returnforbidden, and I was misguided by the
> different behaviour for files and directories. In detail, for maybe
> helping other misguided half-blinds like me:
>
> I checked file access using TCL's "file normalize",
> which returns
>   "/path/to/real/file.ext"
> for requests of "/path/to/webserver/pages/symdir/file.ext" in a
> symbolically linked directory (symbolic link
>   "symdir --> /path/to/real"
> in physical naviserver page root "/path/to/webserver/pages"),
>
> but returns
>   "/path/to/webserver/pages/physdir/file.ext"
> if only "file.ext" links symbolically somewhere else (symbolic link
>   "file.ext --> /path/to/real/file.ext"
> in physical directory "/path/to/webserver/pages/realdir")
>
>
> So I just had to drop the normalizing.


Check out ns_register_fasturl2file:

  http://naviserver.sourceforge.net/n/naviserver/files/ns_register_url2file.html

It's like the 'mount' command in linux, or like symlinking one
directory to another.

Some examples (bit obscure...) here:

  http://bitbucket.org/naviserver/naviserver/src/tip/tests/url2file.test#cl-73