Beefy Boxes and Bandwidth Generously Provided by pair Networks
Just another Perl shrine
 
PerlMonks  

by Samn (Monk)
on Jul 09, 2002 at 19:12 UTC ( [id://180579] : note . print w/replies, xml ) Need Help??


in reply to Re: Executing code in a string
in thread [untitled node, ID 180576]

Replies are listed 'Best First'.
Re^3: Executing code in a string
by Aristotle (Chancellor) on Jul 09, 2002 at 20:37 UTC
    Specifically, consider using the Safe module to restrict the kinds of things that the external code is allowed to do. For example, the following:
    use Safe; my $compartment = new Safe; $compartment->permit_only(':base_core'); my $result = $compartment->reval($foo);
    will forbid a great number of operations but leaves enough allowed so that $foo could be a configuration file - written in Perl syntax. In that case, the rdo() method is also interesting: my $result = $compartment->rdo($filename); which is a safe replacement for my $result = do $filename; For information about the tags and names you can use in the permit() call, see the documentation to the Opcode module.

    Makeshifts last the longest.