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For 2023 - we are now fully retired from IT training.
We have made many, many friends over 25 years of teaching about Python, Tcl, Perl, PHP, Lua, Java, C and C++ - and MySQL, Linux and Solaris/SunOS too. Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own risk.

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Safety of actevex by ActiveState PerlCtrl

Posted by bdimych (bdimych), 5 December 2004
How to make that actevex control created by ActiveState PerlCtrl might be started only on the certain site

Posted by admin (Graham Ellis), 5 December 2004
Are you asking how to have a Perl CGI script that includes active X components only use them for certain browsers?   If so, you can use the $ENV{REMOTE_ADDR} variable in your script to react one way for hosts in a certain domain range, and a different way for hosts in a different domain range - e.g. for internal and external visitors.

If I've understood the question right but you're looking for something a little more sophisticated - for example to provide the controls only to users who have registered or logged in, the you'll want to use cookies or hidden fields rather than the remote IP.

Posted by bdimych (bdimych), 6 December 2004
Many thanks but I have insufficiently precisely asked, please sorry for my english I'll try to specify

There is site with several admins. In the admins pages there is activex <object classid=... which prepare content for the site from some local files. If hacker found out CLSID of this control, made his own page and admin went to this page, it may be very bad.

Activex written in Perl and compiled to dll by PerlCtrl.exe from ActiveState PDK

Is it possible to limit this control may start only on certain addresses. For example to determine address from control code or adjust IE security zones or something else ?

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