crack-common 5.0a-9.3 / usr / share / Crack / scripts / netcrack

#!/usr/bin/perl
###
# This program was written by and is copyright Alec Muffett 1991,
# 1992, 1993, 1994, 1995, and 1996, and is provided as part of the
# Crack v5.0 Password Cracking package.
#
# The copyright holder disclaims all responsibility or liability with
# respect to its usage or its effect upon hardware or computer
# systems, and maintains copyright as set out in the "LICENCE"
# document which accompanies distributions of Crack v5.0 and upwards.
###

eval 'exec perl -S $0 "$@"'
    if $runnning_under_some_shell;

# I know it's possible to recode this in awk/sh, in fact it was done
# so for Crack v4.1.  I just can't face re-doing it.  - alecm
$| = 1;

$nfsdicts = "run/dict/gecos.* run/dict/gcperm.*";

###
# host : relative power : nfs mounted [y/n] : username [optional] : crack dir
###
# foo:30:y:user1:~alecm/crack/c50/
# bar:20:y::~alecm/crack/c50/
# baz:10:n::/usr/local/c50/
#

sub bypower
{
    $powerof{$b} <=> $powerof{$a};
}

###
# read the config file and build the lists
###

# use a cookie-based scheme in order to permit multiple instances of
# the same hostname in one file...

$counter = 0;

$cf = "conf/network.conf";

die "netcrack: $cf: $!\n" unless (open(CONFIG, $cf)) ;
while (<CONFIG>)
{
    s/\s+$//o;
    next if /^\s*\#/o;
    next if /^\s*$/o;

    $counter++;

    ($host, $power, $nfs, $user, $path) = split(/:/, $_, 5);
    $cookie = "$counter-$host";

    $hostof{$cookie} = $host;
    $powerof{$cookie} = $power;
    $nfsof{$cookie} = $nfs;
    $userof{$cookie} = $user if ($user ne "");
    $pathof{$cookie} = $path;

    $totalpower += $power;
}
close(CONFIG);

$stats{"power"} = $totalpower;

###
# slurp all data into memory for dividing up manually
###

$lastsortkey = ":";             # Ha!
$drossfile = "run/D.network$$";
$killfile = "run/K.network$$";
@data = ();

unless (open(DROSS, ">$drossfile"))
{
    die "netcrack: $drossfile: $!\n";
}

while (<STDIN>)
{
    unless (/^D:/o)
    {
	print DROSS $_;
	next;
    }

    $stats{"users"}++;
    $sortkey = (split(/:/))[1];

    if ($sortkey eq $lastsortkey)
    {
	$data[$#data] .= $_;
    } else
    {
	$totalkeys++;
	$lastsortkey = $sortkey;
	push(@data, $_);
    }
}
close(DROSS);

$stats{"sortkeys"} = $totalkeys;

###
# print statistics
###

foreach $stat (sort keys %stats)
{
    print "netcrack: $stat: $stats{$stat}\n";
}

###
# split the data up proportionately and dispatch
###

$datasize = $#data + 1;
@cookielist = sort bypower keys %hostof;

unless (open(KILL, ">$killfile"))
{
    die "netcrack: $killfile: $!\n";
}

print KILL "PATH=$ENV{PATH}\nexport PATH\n";

while (@cookielist)
{
    $cookie = shift(@cookielist);

    if ($#cookielist >= 0)
    {
	$slicesize = int(($powerof{$cookie} / $totalpower) * $datasize);
	$totalpower -= $powerof{$cookie};
	$datasize -= $slicesize;
	@slice = splice(@data, 0, $slicesize);
    }
    else
    {
	@slice = @data;
    }

    $slicesize = $#slice + 1;

    if ($slicesize)
    {
	$rshpfx = sprintf("crack-rsh %s %s %s",
			  (defined($userof{$cookie}) ? "-l $userof{$cookie}" : ""),
			  $hostof{$cookie},
			  $pathof{$cookie});

	printf("netcrack: %s: power=%d sortkeys=%d (%2.1f%%)\n",
	       $hostof{$cookie},
	       $powerof{$cookie},
	       $slicesize,
	       ($slicesize / $totalkeys) * 100);

	if ($nfsof{$cookie} =~ /^n/oi)
	{
	    $cmd = "$rshpfx/Crack -makedict";
	    printf("netcrack: $cmd\n");
	    system $cmd;

	    $cmd = sprintf("crack-rcp %s %s%s:%s/run/dict",
			   $nfsdicts,
			   (defined($userof{$cookie}) ? "$userof{$cookie}\@" : ""),
			   $hostof{$cookie},
			   $pathof{$cookie});
	    printf("netcrack: $cmd\n");
	    system $cmd;
	}

	$remkillfile = "run/RK$cookie";

	$cmd = "$rshpfx/Crack -remote -kill $remkillfile @ARGV";
	printf("netcrack: $cmd\n");
	unless(open(PIPE, "|$cmd"))
	{
	    warn "netcrack: popen(): $!\n";
	}
	print PIPE @slice;
	close(PIPE);

	printf(KILL "crack-rsh %s %s sh -x %s/%s\n",
	       (defined($userof{$cookie}) ? "-l $userof{$cookie}" : ""),
	       $hostof{$cookie},
	       $pathof{$cookie},
	       $remkillfile);

	$slicebytes = 0;
	foreach (@slice)
	{
	    $slicebytes += length;
	}

	printf("netcrack: sent %d sortkeys, %d bytes\n\n",
	       $slicesize, $slicebytes);
    }
}
print KILL "rm -f \$0\n";
print KILL "exit 0\n";
close(KILL);

exit 0;