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#!/usr/bin/perl
use Getopt::Long;
use strict;
use lib "/opt/vyatta/share/perl5";
use Vyatta::Misc;
my ($iface, $want);
GetOptions("interface=s" => \$iface,
"want=s" => \$want);
# Return the current router address from an interface that is
# configured via dhcp. Return 127.0.0.1 for all errors.
# This address will be used for the next hop address for static routes.
sub get_dhcp_router {
my $dhcp_iface = pop(@_);
if (!Vyatta::Misc::is_dhcp_enabled($dhcp_iface,0)) {
return "127.0.0.1";
}
my $lease = "/var/lib/dhcp/dhclient_${dhcp_iface}.lease";
my $router = `grep new_routers= $lease | cut -d"'" -f2`;
my @r = split(/,/, $router);
$router = $r[0];
# Make sure the result looks like a IP
if ($router !~ /\d+\.\d+\.\d+\.\d+/) {
return "127.0.0.1";
}
# Remove trailing newlines
$router =~ s/\n$//;
return $router;
}
# Return the current ipv4 address from an interface that is
# configured via dhcp. Return 127.0.0.1 for all errors.
# This address will be used for the local-ip for tunnels,
sub get_dhcp_addr {
my $dhcp_iface = pop(@_);
if (!Vyatta::Misc::is_dhcp_enabled($dhcp_iface,0)) {
return "127.0.0.1";
}
my @dhcp_addr = Vyatta::Misc::getIP($dhcp_iface,4);
my $addr = pop(@dhcp_addr);
if (!defined($addr)) {
return "127.0.0.1";
}
@dhcp_addr = split(/\//, $addr);
$addr = $dhcp_addr[0];
return $addr;
}
if ($want eq 'local') {
print get_dhcp_addr($iface);
}
else {
print get_dhcp_router($iface);
}
exit 0;
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