I have written this little app, really just for somthing to. but I keep getting the following error. 
Use of uninitialized value in pattern match (m//) at ./usercheck.pl li
+ne 35.
Use of uninitialized value in pattern match (m//) at ./usercheck.pl li
+ne 35.

[download]
Repeated a rather large amount of times. I think that @source is not beening assigned any values? and using perl -d did not reap much help but im still learning my way round the debuger. 
#!/usr/bin/perl -w
# by n00dles

use IO::Socket;
use strict;

my $target = 'localhost';
my $userlist = 'uselist.txt';
my $timeout = 40;

print "Content-type: text/html\n\n";
print "<BODY BGCOLOR=#000000 Text=#008000 link=#00c000 vlink=lightblue
+>";
print "<PRE>\n";
print "<H2>Active Apache user accounts</H2>\n\n";
print "<B>Loading from file $userlist</B>\n";

open(USERS, "< $userlist") or die "cannot open file: $!\n";
my @users =<USERS>;
close(USERS);
print "<B>User list $userlist loaded!</B>\n";
print "<B>Starting Scan please wait...</B>\n";

for (my $i = 0; $i < scalar(@users); $i++) {
        my $socket = new IO::Socket::INET (
                peerAddr => $target,
                peerPort => '80',
                Proto => 'tcp',
                Timeout => $timeout,);
        die "Socket failed at $target\n" unless $socket;

        print $socket "GET http://$target/~$users[$i] HTTP/1.0\r\n\r\n
+";
        my @source = <$socket>;

        foreach my $line ($source[2]) {
                if ($line =~/302 Found/ || $line =~ /200 OK/ || $line 
+=~ /403 Forbidden/ || $line =~ /301 Moved Permanetly/) {
                        print "Found: $users[$i]";
                }
        }
close($socket);
}

print "</BODY></HTML>";

[download]
Any wisdom you can offer would be greatly recived. I have made a command-line version of this app that uses @ARGV to take the target and userlist from the prompt witch works fine, but this version does not.

n00dles
lynx.neocyber.info

2006-09-03 Retitled by g0n, as per Monastery guidelines
Original title: 'Completely lost :('

In reply to Completely lost - 'Use of uninitialized value in pattern match...' error :( by n00dles

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