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Greetings, I'm not sure what kind of an environment you are working in. But you should have little difficulty controlling who uses your script(s), and from where.
For example, you could prevent exec(ing) based on an eval as to where the posted || query is comming from ( $local || $remote), or even from where the script has been exec(ed) within the system itself (get $pwd || $cwd). This is a farily trivial matter. You could perfom the eval(s) from within the script, or, if Apache for example, within the server itself. Example:
Create a var(iable) : $ENV{SERVER_NAME};
create a Condition : unless (defined($ENV{SERVER_NAME}) == mydomain.tld, die "goto h3ll";
Problem solved. :)
Best wishes.
--Chris
#!/usr/bin/perl -Tw
use perl::always;
my $perl_version = "5.12.4";
print $perl_version;

In reply to Re^2: How to ensure that a supported version of my script is being executed? by taint
in thread How to ensure that a supported version of my script is being executed? by sanbiswa

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