Shell Programming and Scripting

#!/usr/bin/perl

use strict;
use IO::Socket;

my $filename;

my @command;
 
my $server = IO::Socket::INET->new(
    Listen => 5,
    LocalAddr => '127.0.0.1',
    LocalPort => 5050,
    Proto     => 'tcp'
) or die "Can't create server socket: $!";
$server->autoflush(1);
 
while(my $client = $server->accept)
{
   while (<$client>)
   {
	print $_ ;
	@command = split(/ /, $_);
 
      if(lc(trim($command[0])) eq 'time')   { print $client &getTimeStamp()."\r\n"; }
      elsif(lc(trim($command[0])) eq 'hi')  { print $client "Hello!\r\n"; }
      
      ## if honeypot has some data to send
      elsif(lc(trim($command[0])) eq 'send') 
      {
      		print $client "You said to send some data\r\n";
      }
      
      ## if we see put command then save the file
      
      elsif(lc(trim($command[0])) eq 'put')
      {
      	if(defined($command[1]) && -e trim($command[1]))
      	{
      		$filename = trim($command[1]);
      		print $client "GOAHEAD\r\n";
      		
      		open FILE, ">./filez_t/$filename";
            binmode FILE;
            while (<$client>)
            {
                if (trim($_) eq 'DONE')
                {
                	close FILE;
                	last;
                }
                
                print FILE $_;
            }
            close FILE;
 			print $client "Thanks for sending the file\n"
       }
     }	
      else { print $client "Unknown Command\r\n"; }
      	}
      }

sub getTimeStamp
{
   # Get the all the values for current time
   (my $Second, my $Minute, my $Hour, my $Day, my $Month, my $Year, my $WeekDay, my $DayOfYear, my $IsDST) = localtime(time);
 
   # adding 1900 will create a four digit year value
   $Year = $Year - 100;
 
   # Adding 1 to month because months don't start at 0
   $Month++;
 
   #format the current time into the correct format and return it
   return sprintf("%02d%02d%02d%02d%02d%02d",$Year,$Month,$Day,$Hour,$Minute,$Second);
}
 
 
sub trim($)
{
	my $string = shift;
	$string =~ s/^\s+//;
	$string =~ s/\s+$//;
        $string =~ s/[\r]+//;
        $string =~ s/[\n]+//;
	return $string;
}

#!/usr/bin/perl
 
use strict;
use IO::Socket;
 
my $server = IO::Socket::INET->new(
    PeerAddr => '127.0.0.1',
    PeerPort => 5050,
    Proto    => 'tcp'
) or die "Can't create client socket: $!";
$server->autoflush(1);
 
my $i = 0;
my $msg;
my @command;
my $filename="who_connected.pl";

while(1)
{
   print "ASAP> ";
   $msg = <STDIN>;
   print $server $msg."\r";
 
   while(<$server>)
   {
      @command = split(/ /, $msg);
 
      if(lc(trim($command[0])) eq 'put')
      {
		$filename = trim($command[1]);
        
            open FILE, "$filename" or die "Can't open: $!";
            binmode FILE;
            while (<FILE>)
            {
               print $server $_;
		print "*";
            }
            close FILE;
            print $server "\nDONE\n";
      }
      		print $_ ."\n";
		last if eof($_);
   }
 
}
 
 
 
sub trim($)
{
	my $string = shift;
	$string =~ s/^\s+//;
	$string =~ s/\s+$//;
        $string =~ s/[\r]+//;
        $string =~ s/[\n]+//;
	return $string;
}