+# take a standard input message and decode it into its standard parts
+sub decode_input
+{
+ my $dxchan = shift;
+ my $data = shift;
+ my ($sort, $call, $line) = $data =~ /^([A-Z])([A-Z0-9\-]{3,9})\|(.*)$/;
+
+ my $chcall = (ref $dxchan) ? $dxchan->call : "UN.KNOWN";
+
+ # the above regexp must work
+ unless (defined $sort && defined $call && defined $line) {
+ $data =~ s/([\x00-\x1f\x7f-\xff])/uc sprintf("%%%02x",ord($1))/eg;
+ dbg('err', "DUFF Line on $chcall: $data");
+ return ();
+ }
+
+ if(ref($dxchan) && $call ne $chcall) {
+ dbg('err', "DUFF Line come in for $call on wrong channel $chcall" );
+ return();
+ }
+
+ return ($sort, $call, $line);
+}
+