package HotSaNICmod::OSdep;

use lib "../../lib";

sub version {
  ($VERSION = '$Revision: 1.8 $') =~ s/.*(\d+\.\d+).*/$1/;
  return "$^O.pm $VERSION";
  }

sub sample {
  my %args=@_;

  my $IPTABLES=$args{IPTABLES};
  my $VAR=$args{VARDIR};

  if ( (! -e "$VAR/acct_int.dat") || (! -e "$VAR/acct_ext.dat")) {
    system("$IPTABLES -L acct_int -xvn > $VAR/acct_int.dat");
    system("$IPTABLES -L acct_ext -xvn > $VAR/acct_ext.dat");
    }

  my %acct_int_old=readfile("$VAR/acct_int.dat",$IPTABLES);
  my %acct_ext_old=readfile("$VAR/acct_ext.dat",$IPTABLES);
  system("$IPTABLES -L acct_int -xvn > $VAR/acct_int.dat");
  system("$IPTABLES -L acct_ext -xvn > $VAR/acct_ext.dat");
  my %acct_int=readfile("$VAR/acct_int.dat",$IPTABLES);
  my %acct_ext=readfile("$VAR/acct_ext.dat",$IPTABLES);

  my $time=time;

  foreach my $nn (sort(keys(%acct_int))) {
    $allin=$acct_int{$nn}[1]-$acct_int_old{$nn}[1];
    $tcpin=$acct_int{$nn}[3]-$acct_int_old{$nn}[3];
    $udpin=$acct_int{$nn}[5]-$acct_int_old{$nn}[5];
    $icmpin=$acct_int{$nn}[7]-$acct_int_old{$nn}[7];
    $allout=$acct_int{$nn}[2]-$acct_int_old{$nn}[2];
    $tcpout=$acct_int{$nn}[4]-$acct_int_old{$nn}[4];
    $udpout=$acct_int{$nn}[6]-$acct_int_old{$nn}[6];
    $icmpout=$acct_int{$nn}[8]-$acct_int_old{$nn}[8];
    my $name = "int$nn";
    $name =~ s/\//_/g;
    HotSaNICmod::do_rrd($name,"U",$time,$tcpin,$udpin,$icmpin,$tcpout,$udpout,$icmpout);
    }

  foreach my $nn (sort(keys(%acct_ext))) {
    $allin=$acct_ext{$nn}[1]-$acct_ext_old{$nn}[1];
    $tcpin=$acct_ext{$nn}[3]-$acct_ext_old{$nn}[3];
    $udpin=$acct_ext{$nn}[5]-$acct_ext_old{$nn}[5];
    $icmpin=$acct_ext{$nn}[7]-$acct_ext_old{$nn}[7];
    $allout=$acct_ext{$nn}[2]-$acct_ext_old{$nn}[2];
    $tcpout=$acct_ext{$nn}[4]-$acct_ext_old{$nn}[4];
    $udpout=$acct_ext{$nn}[6]-$acct_ext_old{$nn}[6];
    $icmpout=$acct_ext{$nn}[8]-$acct_ext_old{$nn}[8];
    my $name = "ext$nn";
    $name =~ s/\//_/g;
    HotSaNICmod::do_rrd($name,"U",$time,$tcpin,$udpin,$icmpin,$tcpout,$udpout,$icmpout);
    }
  }

sub init {
  my %args=@_;
  if (! defined $args{IPTABLES}) { HotSaNICmod::dupe_control("die",$args{MODNAME},"IPTABLES missing in module settings..."); }

  $IPTABLES=$args{IPTABLES};

  HotSaNIClog::info("clearing old accounting chains");
  foreach $dev (split(/,/,$args{EXTIF})) {
    if ($IPTABLES =~ /ipchains/) {
      system("$IPTABLES -D input -i $dev -j acct_ext > /dev/null");
      system("$IPTABLES -D output -i $dev -j acct_ext > /dev/null");
      }
    else {
      system("$IPTABLES -D INPUT -i $dev -j acct_ext > /dev/null");
      system("$IPTABLES -D OUTPUT -o $dev -j acct_ext > /dev/null");
      system("$IPTABLES -D FORWARD -i $dev -j acct_ext > /dev/null");
      system("$IPTABLES -D FORWARD -o $dev -j acct_ext > /dev/null");
      }
    }
  system("$IPTABLES -F acct_ext > /dev/null");
  system("$IPTABLES -X acct_ext > /dev/null");

  foreach $dev (split(/,/,$args{INTIF})) {
    if ($IPTABLES =~ /ipchains/) {
      system("$IPTABLES -D input -i $dev -j acct_int > /dev/null");
      system("$IPTABLES -D output -i $dev -j acct_int > /dev/null");
      }
    else {
      system("$IPTABLES -D INPUT -i $dev -j acct_int > /dev/null");
      system("$IPTABLES -D OUTPUT -o $dev -j acct_int > /dev/null");
      system("$IPTABLES -D FORWARD -i $dev -j acct_int > /dev/null");
      system("$IPTABLES -D FORWARD -o $dev -j acct_int > /dev/null");
      }
    }
  system("$IPTABLES -F acct_int > /dev/null");
  system("$IPTABLES -X acct_int > /dev/null");

  HotSaNIClog::info("setting up accounting chains");
  system("$IPTABLES -N acct_ext > /dev/null");
  system("$IPTABLES -N acct_int > /dev/null");

  #
  # set up Accounting for unique IPs in subnet...
  #

  HotSaNIClog::info("accounting for local targets");

  foreach $item (@{$args{DEVINT}}) {
    ($host,$maxin,$maxout,$descr)=split(/,/,$item);
    HotSaNIClog::info("  $host");
    foreach $prt ("tcp","udp","icmp","all") {
      system("$IPTABLES -A acct_int -s $host -p $prt");
      system("$IPTABLES -A acct_int -d $host -p $prt");
      }
    }

  #
  # set up accounting for dedicated networks to loacl subnet
  #

  HotSaNIClog::info("accounting for externel targets");

  foreach $item (@{$args{DEVEXT}}) {
    ($host,$maxin,$maxout,$descr)=split(/,/,$item);
    HotSaNIClog::info("  $host");
    foreach $prt ("tcp","udp","icmp","all") {
      system("$IPTABLES -A acct_ext -s $host -p $prt");
      system("$IPTABLES -A acct_ext -d $host -p $prt");
      }
    }
        
  HotSaNIClog::info("linking accounting chains to INPUT/OUTPUT chain");
  foreach $item (split(/,/,$args{EXTIF})) {
    ($dev,$maxin,$maxout,$descr)=split(/,/,$item);
    if ($IPTABLES =~ /ipchains/) {
      system("$IPTABLES -I input -i $dev -j acct_ext > /dev/null");
      system("$IPTABLES -I output -i $dev -j acct_ext > /dev/null");
      }
    else {
      system("$IPTABLES -I INPUT -i $dev -j acct_ext > /dev/null");
      system("$IPTABLES -I OUTPUT -o $dev -j acct_ext > /dev/null");
      system("$IPTABLES -I FORWARD -i $dev -j acct_ext > /dev/null");
      system("$IPTABLES -I FORWARD -o $dev -j acct_ext > /dev/null");
      }
    }
  foreach $item (split(/,/,$args{INTIF})) {
    ($dev,$maxin,$maxout,$descr)=split(/,/,$item);
    if ($IPTABLES =~ /ipchains/) {
      system("$IPTABLES -I input -i $dev -j acct_int > /dev/null");
      system("$IPTABLES -I output -i $dev -j acct_int > /dev/null");
      }
    else {
      system("$IPTABLES -I INPUT -i $dev -j acct_int > /dev/null");
      system("$IPTABLES -I OUTPUT -o $dev -j acct_int > /dev/null");
      system("$IPTABLES -I FORWARD -i $dev -j acct_int > /dev/null");
      system("$IPTABLES -I FORWARD -o $dev -j acct_int > /dev/null");
      }
    }
  HotSaNIClog::info("All done! - accounting should be running now!");
  }

sub readfile {
  my ($file,$IPTABLES)=@_;
  my $ip="";
  undef my %hash;
  open (FILE,$file);
  while (<FILE>) {
    chomp;
    if (index($IPTABLES,"ipchains") >= 0 ) { ($pkt,$bytes,$target,$proto,$opt,$tosa,$tosx,$ifname,$src,$dst)=split; }
    else { ($pkt,$bytes,$target,$proto,$opt,$in,$out,$src,$dst)=split; }
    if ($pkt =~ /^[0-9]*$/ ) {
      if ($dst eq "") { ($proto,$opt,$in,$out,$src,$dst)=($target,$proto,$opt,$in,$out,$src); }
      if ($src eq "0.0.0.0/0") { $ip=$dst;$dir=1; } elsif ($dst eq "0.0.0.0/0") { $ip=$src;$dir=0; }
      if ($proto eq "all") { $prt=1 };
      if ($proto eq "tcp") { $prt=3 };
      if ($proto eq "udp") { $prt=5 };
      if ($proto eq "icmp") { $prt=7 };
      if ($ip ne "") {$hash{"$ip"}[$prt+$dir]=$bytes;}
      }
    }
  close (FILE);
  return %hash;
  }

1;

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