#! perl

# check client version and string for old clients and possibly issue warnings for them

sub on_login {
   my ($pl, $host) = @_;

   my $client = $pl->client;

   my $is_cf = $client =~ /^(?:GTK|X11) (?:Unix|Win32) Client ([.0-9]+)/
               ? join "", map chr, split /\./, $1
               : undef;

   if ($is_cf && $is_cf lt v1.9.2) {
      $pl->ob->message ("(enabling workaround for client buffer overflow)", cf::NDI_RED | cf::NDI_UNIQUE);
      $pl->buggy_mapscroll;
   }

   if ($is_cf && $is_cf lt v1.9.1) {
      $pl->ob->message (<<EOF, cf::NDI_RED | cf::NDI_UNIQUE);

*** *** *** *** *** *** *** *** *** *** *** *** *** ***
*** *** *** *** *** *** *** *** *** *** *** *** *** ***
*** WARNING: Your client is BUGGY
*** *** *** *** *** *** *** *** *** *** *** *** *** ***
*** *** *** *** *** *** *** *** *** *** *** *** *** ***

Your client ($client) is known to be buggy. Upgrading is highly recommended, otherwise you may experience crashes, strange lockups or other problems.

EOF
   }

   ()
}