How CGI Restricts The Input

CGI checks the input data by using FML::Restriction::CGI class.

The input should be restricted by FML::Restriction class. We should not use param() method provided by perl's CGI class. Instead use safe_param_xxx() method always to get value.

The following use may be allowed

for my $dirty_buf (param()) {
   ... check ...
}

but we should not use raw param() call.

param($dirtty_buf)

Instead, use safe_param_key().

for my $key (param()) {
   ... check ...

   if (key eq $key) {
       value = safe_param_key()
   }
}

Copyright (C) 1993-2025 Ken'ichi Fukamachi mail:< fukachan at fml.org >