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2003 Sep 16 12:39

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Re: [vox-tech] Odd ncftp bug
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Re: [vox-tech] Odd ncftp bug



On Tue, Sep 16, 2003 at 12:22:44PM -0700, Bill Kendrick wrote:
>
> On Tue, Sep 16, 2003 at 12:17:44PM -0700, Mitch Patenaude wrote:
> >
> > On Tuesday, Sep 16, 2003, at 11:55 US/Pacific, Bill Kendrick wrote:
> > 
> > > > 6. strace -o LOG ncftpget -R ftp://USER:"PASSWORD"@ftp.server.com
> > >
> > >Ah-hah!  Someone, somewhere, is using "%" as an escape character!
> > 
> > That's part of the URL spec.  %XX is used to encode a character that
> > wouldn't be legal otherwise in that context, where XX is the hex for
> > the ascii value of that character.
> 
> Yeah, it totally didn't occur to me that URL encoding might take
> place in the username/password field.

This Perl snippet will properly encode any string for a URL:

$string =~ s/([^a-z0-9_.!~*'() -])/sprintf "%%%02X", ord($1)/gei;
$string =~ tr/ /+/;

David Hummel
Genomics & Gene Discovery
WRRC/ARS/USDA
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