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#!/usr/bin/perl
#
# Module: vyatta-dynamic-dns.pl
#
# **** License ****
# 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.
#
# This code was originally developed by Vyatta, Inc.
# Portions created by Vyatta are Copyright (C) 2008 Vyatta, Inc.
# All Rights Reserved.
#
# Author: Mohit Mehta
# Date: September 2008
# Description: Script to run ddclient per interface as set in Vyatta CLI
#
# **** End License ****
#
use lib "/opt/vyatta/share/perl5/";
use Vyatta::Config;
use Vyatta::Misc;
use Getopt::Long;
use strict;
use warnings;
my $ddclient_run_dir = '/var/run/ddclient';
my $ddclient_cache_dir = '/var/cache/ddclient';
my $ddclient_config_dir = '/etc/ddclient';
#
# main
#
my ($update_dynamicdns, $op_mode_update_dynamicdns, $stop_dynamicdns, $interface);
GetOptions(
"update-dynamicdns!" => \$update_dynamicdns,
"stop-dynamicdns!" => \$stop_dynamicdns,
"op-mode-update-dynamicdns!" => \$op_mode_update_dynamicdns,
"interface=s" => \$interface
);
if (defined $update_dynamicdns) {
my $config;
$config = dynamicdns_get_constants();
$config .= dynamicdns_get_values();
dynamicdns_write_file($config);
dynamicdns_restart();
}
dynamicdns_restart() if (defined $op_mode_update_dynamicdns);
dynamicdns_stop() if (defined $stop_dynamicdns);
exit 0;
#
# subroutines
#
sub dynamicdns_restart {
dynamicdns_stop();
dynamicdns_start();
}
sub dynamicdns_start {
mkdir $ddclient_run_dir
unless (-d $ddclient_run_dir);
mkdir $ddclient_cache_dir
unless (-d $ddclient_cache_dir);
system("/usr/sbin/ddclient -file $ddclient_config_dir/ddclient_$interface.conf >&/dev/null");
}
sub dynamicdns_stop {
system("kill -9 `cat $ddclient_run_dir/ddclient_$interface.pid 2>/dev/null` >&/dev/null");
system("rm -f $ddclient_cache_dir/ddclient_$interface.cache >&/dev/null");
}
sub dynamicdns_get_constants {
my $output;
my $date = `date`;
chomp $date;
$output = "#\n# autogenerated by vyatta-dynamic-dns.pl on $date\n#\n";
$output .= "daemon=1m\n";
$output .= "syslog=yes\n";
$output .= "ssl=yes\n";
$output .= "pid=$ddclient_run_dir/ddclient_$interface.pid\n";
$output .= "cache=$ddclient_cache_dir/ddclient_$interface.cache\n";
$output .= "use=if, if=$interface\n\n\n";
return $output;
}
sub dynamicdns_get_values {
my $output = '';
my $config = new Vyatta::Config;
$config->setLevel("service dns dynamic interface $interface");
my @services = $config->listNodes("service");
foreach my $service (@services) {
$config->setLevel("service dns dynamic interface $interface service $service");
$service="dslreports1" if ($service eq "dslreports");
$service="dyndns2" if ($service eq "dyndns");
$service="zoneedit1" if ($service eq "zoneedit");
my $login = $config->returnValue("login");
my $password = $config->returnValue("password");
my @hostnames = $config->returnValues("host-name");
my $server = $config->returnValue("server");
foreach my $hostname (@hostnames) {
$output .= "server=$server," if defined $server;
$output .= "protocol=$service\n";
$output .= "max-interval=28d\n";
$output .= "login=$login\n";
$output .= "password='$password'\n";
$output .= "$hostname\n\n";
}
}
return $output;
}
sub dynamicdns_write_file {
my ($config) = @_;
mkdir $ddclient_config_dir
unless (-d $ddclient_config_dir);
open(my $fh, '>', "$ddclient_config_dir/ddclient_$interface.conf")
|| die "Couldn't open \"$ddclient_config_dir/ddclient_$interface.conf\" - $!";
print $fh $config;
close $fh;
}
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