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README.md  view on Meta::CPAN

Blocks some attacks,
such as SQL and XSS injections,
mustleak and directory traversals,
thus creating a primitive web application firewall (WAF).
Warning - this is an extra layer, not a replacement for your other security layers.

### Validation Subroutine Support

The `allow` parameter accepts subroutine references for dynamic validation,
enabling complex parameter checks beyond static regex patterns.
These callbacks:

- Receive three arguments: the parameter key, value and the `CGI::Info` instance
- Must return a true value to allow the parameter, false to reject
- Can access other parameters through the instance for contextual validation

Basic usage:

    CGI::Info->new(
        allow => {
            # Simple value check

lib/CGI/Info.pm  view on Meta::CPAN

Blocks some attacks,
such as SQL and XSS injections,
mustleak and directory traversals,
thus creating a primitive web application firewall (WAF).
Warning - this is an extra layer, not a replacement for your other security layers.

=head3 Validation Subroutine Support

The C<allow> parameter accepts subroutine references for dynamic validation,
enabling complex parameter checks beyond static regex patterns.
These callbacks:

=over 4

=item * Receive three arguments: the parameter key, value and the C<CGI::Info> instance

=item * Must return a true value to allow the parameter, false to reject

=item * Can access other parameters through the instance for contextual validation

=back