hi tl.

Quote:
I know several XOOPS sites with '_install' directory.
Attackers can know the sites informations easily via accessing XOOPS_URL/_install/index.php

Of course, there are too many patterns of renaming by users.
(install_, install.bak etc.)
admin.php cannot search all patterns.

Just adding a line checking whether '_INSTALL_CHARSET' is defined or not makes all patterns safe.
(The line is enough light to be ignored)

Thus, I've judged this is worthy code for Protector.