#!/usr/bin/perl
use strict;
use Net::Telnet ();

#Trying to get default values working here -- still working on it
my $clearfile;
my $ipbase; # = shift || "192.168.1";
my $ipcurrent; # = shift || '1';
my $ipend; # = shift || '255';
my $port; # = shift || '23';
my $username;
my $password;
my $telnet;

#This is the log file generated by any failed connections
my $downreport = 'report.log';

print "Do you want to keep the old log file and append the new info? [y/n]\n";
$clearfile=<stdin>;
chomp ($clearfile);
if ($clearfile eq "n"){
open(INFO,">$downreport");
print INFO "\n";}
#Grabbing all pertinent information -- the defaults are not there yet

print "What is the base IP? (Example: 192.168.1)\n";
$ipbase = <stdin>;
chomp ($ipbase);

print "What is the bottom IP? (Default 1)\n";
$ipcurrent = <stdin>;
chomp ($ipcurrent);

print "What is the top IP? (Default 255)\n";
$ipend = <stdin>;
chomp ($ipend);

print "What port would you like to connect to (Default 23)?\n";
$port = <stdin>;
chomp ($port);

print "Username:";
$username = <stdin>;
chomp ($username);

#I would like to find a way to turn off echo or mask this portion
print "Password:";
$password = <stdin>;
chomp ($password);
 
for($ipcurrent .. $ipend){
print "Connecting to $ipbase.$ipcurrent\n";

#This is the TRY part of the try-catch portion, where it tries to connect
#If it doesn't it outputs the error without killing the program

eval {
#Sets parameters for the telnet session
$telnet = new Net::Telnet->new( Timeout=>3,Dump_Log=>'dump.log', input_log=>'input.log', 

output_log=>'output.log', Port=>$port,  Prompt => '/[\$%#>]\ $/');
die &Log_Message("Can't open telnet session to the remote host") unless
#warn &Log_Message("Can't open telnet session to remote host") unless
$telnet;

#opens the particular IP that we're at.  Not sure if these "die" commands are necessary

$telnet->open("$ipbase.$ipcurrent");
#die ("Cannot open $ipbase.$ipcurrent\n");

#This may need some tweaking depending on the log-on format
$telnet->login( Name=>"$username", Password=>"$password");

print "Logged on\n";
print $telnet->getline;

#once connected it tries to exit cleanly
$telnet->print("exit");

};

#The other part was try, this is the CATCH. It catches the errors and logs them
if ($@){
	print $@;
	print "$ipbase.$ipcurrent failed.\n";
	open(INFO, ">>$downreport");
	print INFO "Failure at \t $ipbase.$ipcurrent \t Please investigate.\n";
};

print "Trying the next IP\n";

#Stepping up to the next IP
$ipcurrent++;
}
exit 0;