Hi fellow monks,

Right now, i use eval() to dynamic load a module. eg:
request: script.pl?option=showOverview&....
in the script i do the following:
my $op = $query->param('option') || 'Login';

if ($op !~ /^[a-z0-9_]*$/i) {
      $op="NotAllowed";
}
eval "require $op";
die "Couldn't find Class $op : ".$@."\n" if $@;
$op->perform(...);

[download]

Now i use a regexp to avoid creative ones from using backticks and other system expressions in their request, however i feel not really secure....

I already thought of a way to create a hash with module names, so the $op is matched as a key value of it's module name, like this: 
my $mods = {showOverview=>"showOverview", Login => "Login"}
my $op = $mods->{$query->param('option')};

eval "require $op";
...

[download]

Each time a module is generated, i have to change the script.pl as well however, and i don't like that in 'live' surroundings, (restart http etc).

I hope i'm clear in what i try to accomplish, and hope there are better wayst to accomplish this. Thoughts, ideas and examples are more than welcome.
Thanks in advance (again)

"We all agree on the necessity of compromise. We just can't agree on when it's necessary to compromise." - Larry Wall.

In reply to better ways than eval to dynamic load a module by jbrugger

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