perl and RPM

There are several modules relating to perl and RPM, available via CPAN

perl-RPM2

The RPM2 module allows you to query RPM files and the RPM database

use RPM2;

my $db = RPM2->open_rpm_db();

my $i = $db->find_all_iter();
while (my $pkg = $i->next) {
    print $pkg->as_nvre, "\n";
}