Re: [Arx-users] Gnome-vfs errors when accessing arx.adamantix.org archive

[Walter Landry]

Walter Landry <address@hidden> wrote:
> Tero Koskinen <address@hidden> wrote:
> > Hi,
> > 
> > I am unable to access Arx archive at http://arx.adamantix.org/archive.
> > I have tried with two different operating systems (OpenBSD 4.0-beta
> > and Debian 3.1) from two different locations.
> 
> I am getting a similar error.  Let me work on it a bit, and I will get
> back to you.

I am sorry it took so long.  It turns out that there is a bug in
gnome-vfs.  If you ask for too many URL's too quickly, gnome-vfs
erroneously gives a permission denied error.  This happens even if you
call gnomevfs-copy.  To work around this, I added an exponential
backoff when copying files.  It is a simple fix to
src/arx/libarx/gvfs/copy.cpp, which I am attaching n full.

Let me know if you have any other problems.

Cheers,
Walter Landry
address@hidden

/* Copies one file to another.

  Copyright (C) 2004 Walter Landry
   
  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; version 2 dated June, 1991.

  This program is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  USA */

#include <iostream>
#include "gvfs.hpp"

namespace gvfs
{
  void copy(const uri &source, const uri &target)
  {
    Capture_Error capture;

    GnomeVFSURI *source_uri, *target_uri;
    bool throw_error(false);

    source_uri=gnome_vfs_uri_new(source.escaped_string().c_str());
    target_uri=gnome_vfs_uri_new(target.escaped_string().c_str());

    GnomeVFSResult error_code;

    for(int i=1; i<100; i*=2)
      {
        error_code=
          gnome_vfs_xfer_uri(source_uri,target_uri,GNOME_VFS_XFER_DEFAULT,
                             GNOME_VFS_XFER_ERROR_MODE_ABORT,
                             GNOME_VFS_XFER_OVERWRITE_MODE_REPLACE,
                             0,0);
        if(error_code!=GNOME_VFS_OK)
          {
            throw_error=true;

            if(Command_Info::verbosity>=default_output)
              std::cerr << "copy failed " << i << " "
                        << gnome_vfs_result_to_string(error_code) << " "
                        << source.escaped_string() << " "
                        << target.escaped_string() << " "
                        << std::endl
                        << "retrying in " << i << " seconds"
                        << std::endl;

            sleep(i);
          }
        else
          {
            throw_error=false;
            break;
          }
      }
    if(throw_error)
      throw exception("Transferring Files",error_code,source,target);
  }
}