[libvirt] [jenkins-ci PATCH] lcitool: Use Perl to generate password hashes

[Daniel P. Berrangé]

On Thu, May 17, 2018 at 04:35:12PM +0200, Andrea Bolognani wrote:
> On Thu, 2018-05-17 at 15:22 +0100, Daniel P. Berrangé wrote:
> > On Thu, May 17, 2018 at 04:10:37PM +0200, Andrea Bolognani wrote:
> > > A friend suggested
> > > 
> > > diff --git a/guests/lcitool b/guests/lcitool
> > > index 568e52c..5855368 100755
> > > --- a/guests/lcitool
> > > +++ b/guests/lcitool
> > > @@ -21,7 +21,7 @@ hash_file() {
> > >      perl -le '
> > >          my @chars = ("A".."Z", "a".."z", "0".."9");
> > >          my $salt; $salt .= $chars[rand @chars] for 1..16;
> > > -        open(my $handle, "'"$PASS_FILE"'"); my $pass = <$handle>; chomp $pass;
> > > +        open(my $handle, "'"$PASS_FILE"'"); chomp(my $pass = <$handle>);
> > >          print crypt("$pass", "\$6\$$salt\$");'
> > >  }
> > > 
> > > would be more idiomatic: mind if I squash that in before pushing?
> > 
> > Not sure I'd really agree - in fact at first glance I didn't expect this
> > to even work, because its declaring a variable inside a functin parameter.
> > I tested and it does work, but I find your original clearer.
> 
> I was surprised as well, but then I noticed we're doing the same
> thing with open() too :)
> 
> Can't say I disagree with you, though. We could actually go a bit
> further and apply
> 
> diff --git a/guests/lcitool b/guests/lcitool
> index 568e52c..0c1520e 100755
> --- a/guests/lcitool
> +++ b/guests/lcitool
> @@ -21,7 +21,8 @@ hash_file() {
>      perl -le '
>          my @chars = ("A".."Z", "a".."z", "0".."9");
>          my $salt; $salt .= $chars[rand @chars] for 1..16;
> -        open(my $handle, "'"$PASS_FILE"'"); my $pass = <$handle>; chomp $pass;
> +        my $handle; open($handle, "'"$PASS_FILE"'");
> +        my $pass = <$handle>; chomp($pass);
>          print crypt("$pass", "\$6\$$salt\$");'
>  }
> 
> instead. I don't particularly care either way, but being consistent
> seems preferable than using both approaches in the same line.

Sure, good with me.

Regards,
Daniel
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