lms-makemessages

#!/usr/bin/perl -Tw
#
#  LMS version 1.11-git
#
#  Copyright (C) 2001-2012 LMS Developers
#
#  Please, see the doc/AUTHORS for more information about authors!
#
#  This program is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License Version 2 as
#  published by the Free Software Foundation.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program; if not, write to the Free Software
#  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
#  USA.
#
#  $Id$

use strict;
use DBI;
use Config::IniFiles;
use Getopt::Long;
use vars qw($configfile $quiet $help $version);

sub mask2prefix($)
{
	my $mask = shift @_;
	my @tmp = split('\.',$mask,4);
	my $q = sprintf("%b%b%b%b",$tmp[0],$tmp[1],$tmp[2],$tmp[3]);
	$q =~ s/0*$//;
	if ($q =~ /0/) {
		print " You idiot. error in mask\n";
	}
	my $len = length($q) ;
	return $len;
}

sub prefix2mask
{
	my $host_bits = 32-$_[0];
	my $net_mask = (~0 << $host_bits) & 0xffffffff;
	my @bytes = unpack "CCCC", pack "N", $net_mask;
	my $dec_rep = sprintf "%d.%d.%d.%d", @bytes;
	return $dec_rep;
}					

sub matchip($$$)
{
	my ($ip,$net,$mask) = @_;
	my $prefix = mask2prefix($mask);
	my $bmask = 2**32 - 2**(32-$prefix);
	my @net = split('\.',$net,4);
	my $bnet = dotquad2u32($net);
	if(($bnet & $bmask)!= $bnet) {
		print "EEediot net &mask != net\n"; return 1==0
	}
	my $bip = dotquad2u32($ip);
	return (($bip&$bmask) == $bnet);
}

sub u32todotquad($)
{
	my $p = shift @_;
	return sprintf "%d.%d.%d.%d", ($p>>24)&0xff,($p>>16)&0xff, ($p>>8)&0xff,$p&0xff;
}

sub dotquad2u32($)
{
	my $dq = shift||'0.0.0.0';
	my @dq = split('\.',$dq,4);
	return ((($dq[0] << 8) + $dq[1] << 8) + $dq[2] << 8) + $dq[3];
}

sub isprivate($)
{
	my ($ip) = @_;
	return matchip($ip,"192.168.0.0","255.255.0.0") || matchip($ip,"10.0.0.0","255.0.0.0") || matchip($ip,"172.16.0.0","255.240.0.0");
}

my $_version = '1.11-cvs';

my %options = (
	"--config-file|C=s"	=>	\$configfile,
	"--quiet|q"		=>	\$quiet,
	"--help|h"		=>	\$help,
	"--version|v"		=>	\$version
);

Getopt::Long::config("no_ignore_case");
GetOptions(%options);

if($help)
{
	print STDERR <<EOF;
lms-makemessages, version $_version
(C) 2001-2012 LMS Developers

-C, --config-file=/etc/lms/lms.ini	alternate config file (default: /etc/lms/lms.ini);
-h, --help			print this help and exit;
-v, --version			print version info and exit;
-q, --quiet			suppress any output, except errors;

EOF
	exit 0;
}

if($version)
{
	print STDERR <<EOF;
lms-makemessages, version $_version
(C) 2001-2012 LMS Developers
EOF
	exit 0;
}

if(!$configfile)
{
	$configfile = "/etc/lms/lms.ini";
}

if(!$quiet)
{
	print STDOUT "lms-makemessages, version $_version\n";
	print STDOUT "(C) 2001-2012 LMS Developers\n";
	print STDOUT "Using file $configfile as config.\n";
}

if(! -r $configfile)
{
	print STDERR "Fatal error: Unable to read configuration file $configfile, exiting.\n";
	exit 1;
}

my $ini = new Config::IniFiles -file => $configfile;
print @Config::IniFiles::errors;

my $networks_list = $ini->val('messages', 'networks') || '';
my $excluded_networks_list = $ini->val('messages', 'excluded_networks') || '';
my $customergroups_list = $ini->val('messages', 'customergroups') || '';
my $cfile = $ini->val('messages', 'config_file') || '/etc/rc.d/rc.messages';
my $cuid = $ini->val('messages', 'config_owneruid') || '0';
my $cgid = $ini->val('messages', 'config_ownergid') || '0';
my $cperm = $ini->val('messages', 'config_permission') || '700';
my $redir = $ini->val('messages', 'redirect_address') || '127.0.0.1:80';
my $ipbin = $ini->val('messages', 'iptables_binary') || '/sbin/iptables';
my $chain = $ini->val('messages', 'chain') || 'MESSAGES';

my $dbtype = $ini->val('database', 'type') || 'mysql';
my $dbhost = $ini->val('database', 'host') || 'localhost';
my $dbuser = $ini->val('database', 'user') || 'root';
my $dbpasswd = $ini->val('database', 'password') || '';
my $dbname = $ini->val('database', 'database') || 'lms';

my $dbase;

if($dbtype =~ /mysql/)
{
	$dbase = DBI->connect("DBI:mysql:database=$dbname;host=$dbhost","$dbuser","$dbpasswd", { RaiseError => 1 });
	$dbase->do("SET NAMES utf8");
}
elsif($dbtype eq "postgres")
{
	$dbase = DBI->connect("DBI:Pg:dbname=$dbname;host=$dbhost","$dbuser","$dbpasswd", { RaiseError => 1 });
}
else
{
	print STDERR "Fatal error: unsupported database type: $dbtype, exiting.\n";
	exit 1;
}

open(MESGFILE, ">$cfile") or die("Fatal error: Unable to write $cfile, exiting.\n");

print MESGFILE $ipbin." -t nat -F ".$chain."\n\n";

my $allnetworks = "";

my $dbq = $dbase->prepare("SELECT name FROM networks");
$dbq->execute();
while (my $row = $dbq->fetchrow_hashref()) {
	$allnetworks = "$allnetworks $row->{'name'}";
}
$dbq->finish();

if(!$networks_list)
{
	$networks_list = $allnetworks;
}

my @networks = split ' ',$networks_list;

if($excluded_networks_list)
{
    my @excluded_networks = split ' ', $excluded_networks_list;
    foreach my $excluded_network (@excluded_networks)
    {
	@networks = grep(!/^$excluded_network$/, @networks);
    }
}

my $inicustomergroups = $customergroups_list;

if(!$customergroups_list)
{
	$dbq = $dbase->prepare("SELECT name FROM customergroups");
	$dbq->execute();
	while (my $row = $dbq->fetchrow_hashref()) {
		$customergroups_list = "$customergroups_list $row->{'name'}";
	}
	$dbq->finish();
}

my @customergroups = split ' ',$customergroups_list;
my %customergrouplist;

#
# Buil nodes list
#

$dbq = $dbase->prepare("SELECT id, name FROM customergroups");
$dbq->execute();
while (my $row = $dbq->fetchrow_hashref())
{
	$customergrouplist{$row->{'name'}} = $row->{'id'};
}
$dbq->finish();

$dbq = $dbase->prepare("SELECT ipaddr, name, ownerid FROM nodes WHERE warning=1");
$dbq->execute();
while (my $row = $dbq->fetchrow_hashref())
{
	my $customergroupscount = 0;
	foreach my $key2 (@customergroups)
	{
		my $sdbq = $dbase->prepare("SELECT count(customerid) AS total FROM customerassignments WHERE customerid=$row->{'ownerid'} AND customergroupid=".$customergrouplist{$key2});
		$sdbq->execute();
		my $srow = $sdbq->fetchrow_hashref();
		$sdbq->finish();
		if ($srow->{'total'} eq 1)
		{
			$customergroupscount++;
		}
	}
	if($customergroupscount || !$inicustomergroups)
	{
	        my $tmpname = lc($row->{'name'});
		my $ipaddr = u32todotquad($row->{'ipaddr'});
		my $networkscount = 0;
		foreach my $key (@networks)
		{
			my $sdbq2 = $dbase->prepare("SELECT address, mask FROM networks WHERE name = UPPER('$key')");
			$sdbq2->execute();
			while (my $srow2 = $sdbq2->fetchrow_hashref()) 
			{
				my $net = u32todotquad($srow2->{'address'});
				if (matchip($ipaddr, $net, $srow2->{'mask'}))
				{
					$networkscount++;
				}
			}
			$sdbq2->finish();
		}
		if ($networkscount)
		{
			print MESGFILE "# $tmpname\n".$ipbin." -t nat -A ".$chain." -p tcp -s ".$ipaddr." -j DNAT --to ".$redir."\n\n";
		}
	}
}

$dbq->finish();
$dbase->disconnect();
close(MESGFILE);
chown $cuid, $cgid, $cfile or print "Warning! Unable to set owner of $cfile to $cuid.$cgid.\n";
chmod oct($cperm), $cfile or print "Warning! Unable to set permission $cperm to $cfile.\n";