#!/usr/bin/perl 
#server.pl 
 
#use strict; 
use Socket; 

use constant IPADDR => '192.168.1.254';
use constant PORT => 4000;
use constant MAX_RECV_LEN => 100;



my $local_host = gethostbyname(IPADDR);
my $local_port = PORT;
my $proto = getprotobyname('udp');
my $local_addr = sockaddr_in($local_port, $local_host);

socket(DHCP_SOCK ,PF_INET,SOCK_DGRAM,$proto) or die "socket() failed: $!";
bind(DHCP_SOCK ,$local_addr);

my $all;
my $myall=[];


while( 1 )
{
	my $my_all = recv( DHCP_SOCK, $all, MAX_RECV_LEN ,0 ) or warn "Problem with recv all";
	
	@myall=split(/;/,$all);
	
	my $ipaddr = @myall[0];
	my $macaddr = @myall[1];
	my $net = @myall[2];
	my $opt = @myall[3];
	my $username = @myall[4];
	
	if ( $my_all ){
	#	my( $the_port, $the_ip ) = sockaddr_in( $my_all );
		
		#system("(echo %date:~0,10% %time:~0,5% ip:$ipaddr,mac:$macaddr,net:$net,opt:$opt,user:$username )");
		system("(echo %date:~0,10% %time:~0,5% ip:$ipaddr,mac:$macaddr,net:$net,opt:$opt,user:$username >> e:\\bat\\dhcp_debug.log )");
		
		if ( $opt eq 'addmac') {
			system("(echo %date:~0,10% %time:~0,5% add $ipaddr $macaddr $username >> e:\\bat\\dhcp_server.log )");
			system("(netsh dhcp server scope $net add reservedip $ipaddr $macaddr $username $username BOTH ||echo %date:~0,10% %time:~0,5% false add >> e:\\bat\\dhcp_server.log)");
		}
		
		elsif ( $opt eq 'rmvmac') {
			system("(echo %date:~0,10% %time:~0,5% delete $ipaddr $macaddr >> e:\\bat\\dhcp_server.log )");
			system("(netsh dhcp server scope $net delete reservedip $ipaddr $macaddr ||echo %date:~0,10% %time:~0,5% false delete >> e:\\bat\\dhcp_server.log )");
		}
	}	
	else
	{
		warn "Problem with recv: @!\n";
	}

}