#!/usr/bin/perl -Tw
use strict;
use English; # long names for special variables
use CGI qw(:standard);
use CGI::Carp 'fatalsToBrowser';
$OUTPUT_AUTOFLUSH = 1; # flush output buffer after each output statement ...
# ... slower but helpful for output over the network
$OUTPUT_RECORD_SEPARATOR = "\n";
print header; # to generate document-type
print XHTMLhead();
middle();
print XHTMLtail();
# -- subroutines follow -- #
sub middle {
my $real_ID = $REAL_USER_ID || -1;
my $effect_ID = $EFFECTIVE_USER_ID || -1;
my $real_name = ($real_ID != -1)
? ((getpwuid $real_ID)[0])
: "-- unknown --";
my $effect_name = ($effect_ID != -1)
? ((getpwuid $effect_ID)[0])
: "-- unknown --";
print "
About this CGI program
";
print "
How Is It Being Run?
";
print "
";
print " This program is being run by the user with";
print " ID $real_ID (", $real_name,")";
printf "%s ", ($real_ID == $effect_ID) ?"and" :"but";
print "the effective user ID is $effect_ID (", $effect_name, ").";
print "
";
if ($real_ID != $effect_ID) {
print "Therefore the program is running as suid.";
}
elsif ($real_name =~ /^httpd?/) {
print "It looks like the program is being run by the server.";
}
else {
print "It looks like the program is being run under suexec.";
}
print "
