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package VyattaIpTablesAddressFilter;
use VyattaConfig;
use VyattaMisc;
my %_protocolswithports = (
tcp => 1,
udp => 1,
6 => 1,
17 => 1,
);
my %fields = (
_srcdst => undef,
_range_start => undef,
_range_stop => undef,
_network => undef,
_address => undef,
_port => undef,
_protocol => undef,
_src_mac => undef,
);
sub new {
my $that = shift;
my $class = ref ($that) || $that;
my $self = {
%fields,
};
bless $self, $class;
return $self;
}
sub setup {
my ($self, $level) = @_;
my $config = new VyattaConfig;
$config->setLevel("$level");
# setup needed parent nodes
$self->{_srcdst} = $config->returnParent("..");
$self->{_protocol} = $config->returnValue(".. protocol");
# setup address filter nodes
$self->{_range_start} = $config->returnValue("range start");
$self->{_range_stop} = $config->returnValue("range stop");
$self->{_address} = $config->returnValue("address");
$self->{_network} = undef;
if (defined($self->{_address}) && ($self->{_address} =~ /\//)) {
$self->{_network} = $self->{_address};
$self->{_address} = undef;
}
$self->{_port} = $config->returnValue("port");
$self->{_src_mac} = $config->returnValue("mac-address");
return 0;
}
sub setupOrig {
my ($self, $level) = @_;
my $config = new VyattaConfig;
$config->setLevel("$level");
# setup needed parent nodes
$self->{_srcdst} = $config->returnParent("..");
$self->{_protocol} = $config->returnOrigValue(".. protocol");
# setup address filter nodes
$self->{_range_start} = $config->returnOrigValue("range start");
$self->{_range_stop} = $config->returnOrigValue("range stop");
$self->{_address} = $config->returnOrigValue("address");
$self->{_network} = undef;
if (defined($self->{_address}) && ($self->{_address} =~ /\//)) {
$self->{_network} = $self->{_address};
$self->{_address} = undef;
}
$self->{_port} = $config->returnOrigValue("port");
$self->{_src_mac} = $config->returnValue("mac-address");
return 0;
}
sub print {
my ($self) = @_;
print "srcdst: $self->{_srcdst}\n" if defined $self->{_srcdst};
print "range start: $self->{_range_start}\n" if defined $self->{_range_start};
print "range stop: $self->{_range_stop}\n" if defined $self->{_range_stop};
print "network: $self->{_network}\n" if defined $self->{_network};
print "address: $self->{_address}\n" if defined $self->{_address};
print "port: $self->{_port}\n" if defined $self->{_port};
print "protocol: $self->{_protocol}\n" if defined $self->{_protocol};
print "src-mac: $self->{_src_mac}\n" if defined $self->{_src_mac};
return 0;
}
sub rule {
my ($self) = @_;
my $rule = "";
my $can_use_port = 1;
if (!defined($self->{_protocol})
|| !defined($_protocolswithports{$self->{_protocol}})) {
$can_use_port = 0;
}
if (($self->{_srcdst} eq "source") && (defined($self->{_src_mac}))) {
# handle src mac
my $str = $self->{_src_mac};
$str =~ s/^\!(.*)$/! $1/;
$rule .= "-m mac --mac-source $str ";
}
# set the address filter parameters
if (defined($self->{_network})) {
my $str = $self->{_network};
$str =~ s/^\!(.*)$/! $1/;
$rule .= "--$self->{_srcdst} $str ";
} elsif (defined($self->{_address})) {
my $str = $self->{_address};
$str =~ s/^\!(.*)$/! $1/;
$rule .= "--$self->{_srcdst} $str ";
} elsif ((defined $self->{_range_start}) && (defined $self->{_range_stop})) {
if ("$self->{_srcdst}" eq "source") {
$rule .= ("-m iprange "
. "--src-range $self->{_range_start}-$self->{_range_stop} ");
}
elsif ("$self->{_srcdst}" eq "destination") {
$rule .= ("-m iprange "
. "--dst-range $self->{_range_start}-$self->{_range_stop} ");
}
}
my ($port_str, $port_err)
= VyattaMisc::getPortRuleString($self->{_port}, $can_use_port,
($self->{_srcdst} eq "source") ? "s" : "d",
$self->{_protocol});
return (undef, $port_err) if (!defined($port_str));
$rule .= $port_str;
return ($rule, undef);
}
sub outputXmlElem {
my ($name, $value, $fh) = @_;
print $fh " <$name>$value</$name>\n";
}
sub outputXml {
my ($self, $prefix, $fh) = @_;
outputXmlElem("${prefix}_addr", $self->{_address}, $fh);
outputXmlElem("${prefix}_net", $self->{_network}, $fh);
outputXmlElem("${prefix}_addr_start", $self->{_range_start}, $fh);
outputXmlElem("${prefix}_addr_stop", $self->{_range_stop}, $fh);
outputXmlElem("${prefix}_port_num",
(join ',', @{$self->{_portnumber}}), $fh);
outputXmlElem("${prefix}_port_name",
(join ',', @{$self->{_portname}}), $fh);
outputXmlElem("${prefix}_port_start", $self->{_portrange_start}, $fh);
outputXmlElem("${prefix}_port_stop", $self->{_portrange_stop}, $fh);
}
|
