> safe with unsanitized user input/unsafe data?

Good question ...

lets test:

  DB<103> $hash={ key => ' text @{[print "Injection" ]} text' }
 => { key => " text \@{[print \"Injection\" ]} text" }

  DB<104> use Data::Dumper

  DB<105> $str = Dumper $hash
$VAR1 = {
          'key' => ' text @{[print "Injection" ]} text'
        };

  DB<106> eval $str
 => { key => " text \@{[print \"Injection\" ]} text" }

  DB<108> print $VAR1->{key}
 text @{[print "Injection" ]} text

[download]

Looks fine for me. =)

update

Explanation: Data::Dumper puts strings into single quotes, so no danger of interpolation.

Data::Dump uses double quotes, but escapes all sigils.

update

NB: eval of included strings can still be dangerous! They don't sanitize dangerous strings for you, they will just reproduce the original data structure.

Cheers Rolf
(addicted to the Perl Programming Language and ☆☆☆☆ :)

PS: Je suis Charlie!

In reply to Re^3: How can I convert hash to string and back again? by LanX
in thread How can I convert hash to string and back again? by sebastiannielsen2

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