# Read all CGI vars into an associative array. # If multiple input fields have the same name, they are concatenated into # one array element and delimited with the \0 character (which fails if # the input has any \0 characters, very unlikely but conceivably possible). # Currently only supports Content-Type of application/x-www-form-urlencoded. sub getcgivars { local($in, %in) ; local($name, $value) ; # First, read entire string of CGI vars into $in if ( ($ENV{'REQUEST_METHOD'} eq 'GET') || ($ENV{'REQUEST_METHOD'} eq 'HEAD') ) { $in= $ENV{'QUERY_STRING'} ; } elsif ($ENV{'REQUEST_METHOD'} eq 'POST') { if ($ENV{'CONTENT_TYPE'}=~ m#^application/x-www-form-urlencoded$#i) { length($ENV{'CONTENT_LENGTH'}) || &HTMLdie("No Content-Length sent with the POST request.") ; read(STDIN, $in, $ENV{'CONTENT_LENGTH'}) ; } else { &HTMLdie("Unsupported Content-Type: $ENV{'CONTENT_TYPE'}") ; } } else { &HTMLdie("Script was called with unsupported REQUEST_METHOD.") ; } # Resolve and unencode name/value pairs into %in foreach (split(/[&;]/, $in)) { s/\+/ /g ; ($name, $value)= split('=', $_, 2) ; $name=~ s/%([0-9A-Fa-f]{2})/chr(hex($1))/ge ; $value=~ s/%([0-9A-Fa-f]{2})/chr(hex($1))/ge ; $in{$name}.= "\0" if defined($in{$name}) ; # concatenate multiple vars $in{$name}.= $value ; } return %in ; } # Die, outputting HTML error page # If no $title, use a default title sub HTMLdie { local($msg,$title)= @_ ; $title= "CGI Error" if $title eq '' ; print < $title

$title

$msg

EOF exit ; }